Weak spark motorcycle reddit. Dry cold compression test was ~180 psi (3 cranks) +-3.

Weak spark motorcycle reddit -Checked spark with spark tester- No spark on spark tester until the spark tester is almost completely closed and then it’s a very weak irregular light orange spark. I got no indication of spark when doing that so I pulled plugs 1 & 3 to check for visible spark (grounded to the bike). 18K subscribers in the paramotor community. I get it. ) It could be weak spark. Mr Hydro Plant Spark, I saw your pics and hereby raise you on replacing brushes on your synchronous motors. This comment was very helpful. We ride mostly 1970s pedal-equipped two-stroke models, such as those manufactured by Puch, Motobécane, Peugeot, Tomos, Garelli, Sachs, Kriedler, etc. a rich main jet and needle will make a high-performance engine run cooler, more fuel in the combustion chamber= more cooling. I just pulled my 2010 Street Triple R out of hibernation. This is a place where all Forester owners can meet and discuss Forester news, mods, and general… Mar 21, 2004 · weak spark Jump to Latest 3. I replaced the spark plug but it's still weak. Underpowered ignition means weak spark or no spark, if there's no spark the fuel won't ignite and the unburnt fuel-air mix goes straight into the exhaust, which might then be ignited by the next (good) cycle of the engine spitting out real exhaust which then ignites the previous charge of unburnt exhaust. Knowing how to diagnose this problem is crucial for any motorcycle enthusiast or DIY mechanic. Other culprits may be spark plug cap or ignition coil. The Scooters subreddit is for road-legal motor scooters (gas or electric), a type of motorcycle with a… Edit: Could possibly be something with your ignition coil too giving weak spark when hot (not dangerously hot or anything though). Get good compression, a good blue spark, clean fuel and system and clean air filter with no leaks at the carb boot and something should happen. I speak almost no… Hello I know this might not be considered a Motorcycle but your subreddit is much bigger than the scooter sub. - resistance reading is within the specs range. Members Online Yamaha Vino - Idle struggles Depends entirely on the valve type and geometry. When it comes to spark plug gaps, millimeters matter. The defect looks like an impact of some sort, which implies a high likelihood that the gap spacing has been affected. More than once I have had issues with getting a spark, on the electronic ignition (pointless) coils, no matter what coil I put on. but when I attach a (new) spark plug cap and (new) spark plug, the spark weakens. If it is not happy with the kill wire removed and the parts cleaned up and you found nothing wrong with the spark plug wire, replace the coil. This will cause fuel fowl across a spark plug. My untrained eye picks up some differences between OEM and NGK. But it was working fine last week. Swapped all the electrics from my bike to his to figure out what was wrong. Dirty or worn spark plug. that's because you'll benefit way more from things like culture/hammers since civ is a snowballing game that is heavy on military in MP. Sparks should fly at the electrode. Benelli, QJ motors and CSC are reputable importers from reputable chinese motorcycle companies and they offer quality products for their price points. Weak spark Hey guys don’t know if this is the right group but I have a gy6 50cc Chinese moped that didn’t have spark when I bought it. It has brand new gasoline. Having to pull back on throttle slightly in order for it to turn over after sitting for 30min-2hrs. Doesn't immediately wear the plates, but they'll wear out much quicker once the springs go. 25000km on a new motorcycle spark plug. Crypto A few things things. However I am thinking that a spark is a spark, right? And any spark would probably ignite the highly combustable air-fuel mixture. Coils can also be fine when cold and progressively worsen as they get hot. 07 HONDA CRF450R Weak spark. Today, however, I did not return for the second and final class. Could it be a cdi issue? Share Add a Comment I'm running the the diagnostics in the handbook as my spark appears really weak, barely visible and thready. (1) Yes, a bad spark plug, incorrect type of spark plug, or a wide spark plug gap can cause a coil to fail. Though, to test your theory unplug the engine harness 6 pin connector and see if spark improves. When everything is cold, the spark is quite strong. Motion pro makes a good one. Even though a bad spark plug is one of the reasons, there are a lot more. You need crisp blue spark. That means you touch the shiny metal part to another shiny metal part and hit the start button. I believe there’s a test for the pulse coil. That's when I saw only a very occasional weak spark (once every several cycles). always check your battery first for any electrical problem. Worn or damaged ignition coil. Hey fellas so I got a vlx600 with weak spark in both cylinder banks. electrical problems are time consuming and frustrating, but all you can do is start tracing the wires and look for loose, dirty, or shorted wires and connections. He replaced the ignition and stator (generator, pickup up coil assembly) still no spark. Post the YEAR, MAKE, and MODEL of your bike, and tell us your problem. Good job on iridium plugs, however, if the factory used regular plugs, and you’re not changing the tune, save the $$$ and get the same plugs from before. Yes, use a spark plug gap tool. A good fully charged battery. I removed all the fuses to see from where it drains power when i have the key at on position and i find out it was only from the ignition wiring (normal). Should my tomos have a blue spark? Or is yellow/orange normal. Not sure how to proceed here. Maybe other electrical problem (battery, stator, r/r, CDI?) unfortunatly mechanics isnt a simple thing to try to learn, theres a chance the spark can be fine, intermittently, and then not be enough or run into problems. so, as we know, running lean isn't bad for the engine as long as it's not overheating. Sounds like a spark issue to me. A few days ago I made a post asking for help because my CBR600RR didn't seem to be running quite right after I replaced the engine. From your help, I gathered that one of my cylinders probably wasn't running right (most likely due to a bad spark plug). Posted by u/No_Cobbler728 - 1 vote and 4 comments So far, I have rebuilt the 3 carbs, dropped in new spark plugs, replaced all the vacuum and fuel lines. Three - is brand new. She had a previous guy replace a battery and spark plug, and all it does is try to start. We can help. The problem is not with the spark, it is that something is draining the power away when the headlight is on. Coil getting weak, not supplying enough juice for spark at higher revs, bad high tension lead, possibly the plugs themselves. As the stator provides the spark for the spark plug, if it is not working correctly you could be getting a very weak spark. If the bike sat for a long time with fuel in the tank. I've confirmed that carb was getting gas (This carb was cleaned 3 weeks ago) I removed the fuel line to the carb and gas squirts out, I saw spark against the engine, I took the air filter off, The intake valve moves, tested new spark plugs, tested ignition coil, and CDI, I sprayed starter fluid through carb, directly into intake and through A friend's dad gave me his non-running '82 Honda Express last year and I'm finally getting around to working on it. Does the injector leak more than the others, if so replace the injector. otherwise you should probably Weak Spark Symptoms. Does the plug have spark, test the plug with a spark plug tester. I just can't keep up, physically, and it's very disappointing. Engine also idles really low at 1000rpm even though idle adjuster is wound almost all in. My KZ400 has been pretty finicky with wanting to spark, seemingly having spark and no spark at random. Vibration can cause a dirty or bad connection to become worse. This reddit is for the powered paragliding community. 16 votes, 13 comments. Make sure the spark leads itself doesn't spark by looking at them at night. If electrical resistance in the secondary ignition circuit is too high the coil must generate a higher voltage to fire the plug. 1K views 10 replies 3 participants last post by mike2012 Sep 23, 2011 72 Commando with Boyer-Brandsen: spark is a weak orange in color, not the "hot fat blue" spark one should expect. A spark, even a strong one, won’t ignite fuel in a combustion chamber until the compression stroke is very close to, or at, the very top. Old cracked spark plug wires can provide weak spark. Has anyone ever had a spark plug cap go bad? Just a friendly disclaimer, writing in all uppercase is widely considered rude as it's typically interpreted as the equivalent of yelling. May 22, 2024 · I’ve been checking resistances on all the wires and parts, I found a loose connection on the spark plug wire, so I clipped the ends and put it back together, it seems to have a good connection now. Oil in old bikes can absorb water from the oil especially if it’s been started and shut down before reaching temp to boil off the water. A motorcycle's charging system isn't like a car's charging system. Today i hop on my bike and it was really not as smooth as yesterday. I have multiple motorcycles and they don't do that unless it has an issue. But the guy that sold it to me said it was new. Test ignition coil/coils and wires and/or replace spark plugs. Just cleaned the carbs, cleaned the tank, new spark plugs, battery is old and I plan on replacing but that shouldn’t have an effect like this I don’t think. Just set the gap on the tester to the same as your plugs and crank. At this point I will look at vacuum + fuel pump, but I still feel like I am getting weak spark. I would borrow a compression gauge from parts store and read up and find out what the compression reading should be. The spark is now yellowish and not that bright. I'm not seeing a really strong arc but both plugs are absolutely sparking. I’ve been looking at the diagram and think the problem could be that I didn’t have the regulator rectifier grounded (the green wire on mine leads to the turn signal relay) but I can’t test it because im waiting on a new main fuse. One issue, it doesn’t want to start :( New spark plug, valve clearances done, float height adjusted, oil change and the… This is generally true but some Delphi ignition systems(and probably others) use the slowing of the crank speed on compression to determine when to spark, if there is no compression (like having the plugs out) then there won’t be a spark, these systems need an inline tester or a spare plug to check for spark. Weak spark can be caused by bad generator, damaged wires, damaged or dirty wire connectors, damaged spark plug, dirty or damaged spark plug cap connector, damaged spark plug cap, damaged ignition coils, damaged or dirty ignition coil connectors, damaged or My BMWs my triumphs etc. 4 cylinder bike, two coils running wasted spark. To check the spark remove the spark plug and, while still in the cap and connected to the bike, hold or lay the threats on the spark plug on the engine or cooling fins and crank the engine. NGK iridium spark plugs state that it last for 100,000km, if your truck has over 100,000 km, it is not a bad thing to replae it. I had a ride after replacing the brake fluid and charging the battery. Stop thumbing it, killing it, and restarting it. It doesn't limp. Am even older one was black full of oily dark residue and didn't fire anymore. Also, I would check your carb tuning and make sure it's clean as well. I hook up a multimeter on the battery and it show me 12,4v on on position. Maybe this bike is prone to that problem too. The Scooters subreddit is for road-legal motor scooters (gas or electric), a type of motorcycle with a step-through frame. IF COILS - any good advice on going to single coil, double lead? Thanx all - 0G 1 A failed coil pack. Dec 5, 2024 · When I observe the spark, it's weak. there could be a fueling issue. I replaced the coils and spark plugs and voila it was back to running fine. when pantheons with no immediate effects will give him nothing. its not the kill switch, I have it unplugged. The spark plug looks like this. The CB650s were known for having the carburation set slightly on the lean side from the factory. This can cause the car to be hard to start or to misfire. Many can be rewired to work alright without a battery, but battery ignition is still better for consistent spark. bmw f650 funduro, carburated. - He lied. Alternatively, you could look at Benelli motorcycles or QJ motors and find yourself one of their US dealerships or CSC motorcycles which ship fully assembled to you. From what I can tell, I’m not getting power to the points. Get the Reddit app Scan this QR code to download the app now Weak rear brake after tire change? Community for any Irish motorcycle related topics, Road racing Sep 10, 2011 · very weak spark Jump to Latest 7. FD-MOTO 2M*10mm 4. 6v across the battery. It is possible to get some visible spark while the spark is too weak to consistently create ignition. Im 20 bikes in and not one of them ever flashed F1 except the SV with the issue. It's getting fuel, carbs were redone in the fall and it was started a few times over the winter. When you pull the rope fast, you should see an arc between the wire and the tip. With regards to fuel. Feb 7, 2006 · Try a new spark plug,if the spark is still weak,check all the connector plugs for corrosion and that they are properly plugged in,check the ground connections that they are tight and no rust on metal. The wrong gap size could cause the cylinder to fire too soon or too The Scooters subreddit is for road-legal motor scooters (gas or electric), a type of motorcycle with a step-through frame. Aug 11, 2013 · I have quite a few. It will not jump any gap on the tester. Question regarding R6 Startup. Yup, same with my Ninja 250. Any help would be appreciated! Hi, just bought a 1970 Honda CL175 that apparently "was" running a year or so ago. To make a long story short, I'm an American living in Korea. Good compression. At high temperatures, this problem can produce bucking or misfires. 92 Polaris 350 trail boss weak spark upvote Indian Motorcycle is the oldest American motorcycle brand, first produced in 1901 by Hendee Manufacturing Company Thank you. 10 votes, 30 comments. there also could be a fault with what tells the spark plug to spark and gives it power. But the chain is too heavy for my weak ass to carry in backpack. I worked on a BMW once that had enough battery to start and ride but it was low enough voltage to start making the computer go wacky. 5K subscribers in the MotorcycleMechanics community. It is a simple wiring set-up, and the PMA/battery combo tells me the PMA is doing its job, but what the heck - no start on PMA/SPARX combo. This is going to be a fairly complicated post, but let me try to sum it up as best I can. I was wondering if there was ever an issue of the magnets moulded into the flywheel can over a long period lose their magnetism thus not generating enough electricity in the coil to spark? The standard copper core spark plugs last 7500 to 8000 miles before something changes internally and they don't fire like they did when new, even after cleaning them and filing the center electrode flat. Make sure the motor is free. so I got a new one. Temperature can cause a cold solder joint to expand. There also saying that in might have weak spark. If you have access to OBD do a fuel injector balance. Check the gap, I'm not convinced that's the issue but it's worth checking. Also make sure you have a big fat blue spark at the spark plug, as a weak spark can exacerbate any starting issues in the cold. What could this be? Fuel injection? Weak spark plugs? Weak starter? Weak battery? Help me out pls. I had this problem on my bike starting last year into this spring. … 35K subscribers in the Fixxit community. Apr 14, 2014 · He was the first to diagnose a potential spark issue. a bit like our bodies use sweat to cool down. The majority of >125cc kickstart bikes made after the 50's will not start without a battery, or will function very poorly that way. 53K subscribers in the scooters community. Also during the slow motion video the NGK spark seemed very straight and consistently hit the same point of the tip. I think these bikes just have a very weak spark, and can be very difficult to see. They look great! A little lean but that’s how it be with stock tune from the factory. 5M Cable First things first, try new plugs and then verify you're getting spark. The spark is jumping from high voltage to ground, the most likely problem is the spark plug wire. Can a bad battery show symptoms that seem like a gunky/bad carb? Absolutely. Make sure it’s in a well ventilated Stopped like a switch turned it off. could it be the spark plug cap or lead? Any ideas? Dec 21, 2019 · Pull out the ignition coil and cdi of my friend klx and installed on my klx - still very very very weak spark. Post pictures, ask questions, find your local gang, and share knowledge. Ended up pulling a spark plug as a final test, and found that in a test, they were giving a weak spark, and the front cylinder's plugs had some oil on them. 9K views 4 replies 3 participants last post by LEFT-ON Mar 22, 2004 Jul 11, 2013 · I disconnected the battery and wired the PMA (via Hugh's reg/rec) to the SPARX capacitor - very weak spark (can just make it out), and that only on every other kick of the kickstart. 2K votes, 302 comments. It could be other things but this possibility can be eliminated without spending much money. Some road tests at the bike's launch in '80/81 commented on the fact that they seemed a little breathless while warming up, but were fine when fully warm. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla Business, Economics, and Finance. It converts or 'rectifies' the A/C current created by the alternator into D/C current required by the battery and all other electrical components on the bike. The bad battery puts out low voltage and that mimics a lean mixture due to a plugged up carburetor. The disc lock came with the chain. A v-twin like a harley with cam in block, solid lifters, pushrods and rocker arms can have the clearance increase by more than . If it's still no good you will have to take the stator,cdi and coil to a motorcycle electrician to test these parts. Two - ran the engine until now. Diagnosing CDI-Related Weak Spark Issues. If it’s been sitting for a while maybe the stator absorbs some water and makes weak spark. I bought a bike (Hyosung 125 rt) off another foreigner before he left. So before we dive into the things you can check, let’s first test to make sure your motorcycle has no spark. I know this much has been done correctly as I have done it before, however I am wondering if perhaps the connections in the Hotwire are part of the cause. Car has 1 ignition coil and a spinning distributor rotor and cap. My r6s (03-04 r6) was actually running on 3 cylinders because of this. Put the plug back on and hardly a spark. Paper in front of exhaust flaps violently (out-pause-out) but never sucks in. Seconding this comment to provide more context. A weak spark, or no-spark, problem may originate within one or more common ignition system components: Worn or damaged spark plug wire insulation. Visual Inspection I have a a customer that called me and said that on her Yamaha 50cc 2-stroke is not starting. Identifying a weak spark quickly saves you time and money, allowing you to get back on the road faster. The gas will ignite with an electronic match's spark, and the burner seems to act normally once lit. sometimes it will make spark but it is a weak spark. Is. It is usually assumed that if you have spark , you have good enough spark. First I found a poor connection on tne spark plug end of the plug wire where the spring clip had gotten lodged crosswise up in the boot and would not allow a positive grip on the plug (had to remove the plug boot to see it) Secondly I removed both carbs again and ran a . 55K subscribers in the scooters community. Get the plug wire positioned about a quarter inch away from the tip of the plug. Though honestly if it has visible spark I would turn my attention over to checking compression and fuel delivery Now if that is the case of weak spark I would first check your wiring, spark plug, plug wire and ignition coil. A couple of days ago my bike started misfiring, i changed the spark plug and the issue was solved, bike ran like heaven. 72 Commando with Boyer-Brandsen: spark is a weak orange in color, not the "hot fat blue" spark one should expect. The Scooters subreddit is for road-legal motor scooters (gas or electric), a type of motorcycle with a… An ignition tester is like 12 bucks. Ensured I had 12v at the starter (didn’t know if a weak starter could cause pickup coil voltage drop. If so, you have spark, and your plug is good enough. I'm lost. So the guy who has 2/3 pastures in his initial lands and who will get pasture culture will be quicker to early empire so he can start settling earlier, etc. When i turn the motor over with the spark plug against the motor I see a weak looking yellow/orange spark, I know from previous experience the spark plug puts out a bright blue spark on cars. While a healthy spark on the spark plug is supposed to have a blue color, a weak spark is more yellow/red-ish. Braaaap. After extensive electrical tests for weak sporadic spark i noticed I couldn't get a good resistance reading through spark plug cap. This moped has CDI ignition, not points. Simply changing the spark plug won’t work all the time. Oct 14, 2008 · Problem resolved - two things - probably more the second. So I'd look a little bit into that maybe try replacing the battery 1st and go from there. But my guess is that OP isn’t pulling plugs, attaching leads, and looking for a spark in a dark garage. Accurate diagnosis is essential to determine if the CDI box is the cause of weak spark. Im betting on the coils. Similarly, poor wiring connections or damaged cables can contribute to weak spark generation by disrupting the flow of electrical signals. This could be constant or completely irregular and sporadic. Weak spark may let you run the bike for a few seconds or so but it will never be good for a ride or any solid idle time at all. Check spark by removing your actual spark plugs, putting them into the boots, and grounding them out on the engine somewhere. If I put a screw driver into the plug wire end, hold it near ground, and operate the points I get the spark to jump about a 1/4 inch. Aug 19, 2005 · 72 Commando with Boyer-Brandsen: spark is a weak orange in color, not the "hot fat blue" spark one should expect. Could not see or hear a spark at all. I think it's not enough and definitely not when the spark plug gets a bit wet by unburnt fuel. I took a plug from the used parts drawer, hooked it up, and I get a better spark. The following steps can help isolate the issue: 1. Some older motorcycles require a so called coil relay modification where voltage is directly supplied from the battery to avoid losing power through the old wiring. Beautifully cleaned carbs. If there's anything gumming that stuff up you'll get a weak spark that's not quite strong enough to reliably ignite. You may experience occasional misfiring as you ride around. Any ideas what could be causing the weak spark? A motorcycle not getting a spark is a big headache when it comes to starting problems. Iridium spark plugs cost three times as much and should last three times as long. What could be causing this? Nov 18, 2007 · I agree- there is a loose connection of bad ground somewhere. It sounds like the bike could be running lean due to being dirty or setup incorrectly. Yesterday I attended my first motorcycle (motorcycle safety foundation/MSF) range class, where I did a pretty good job on a Yamaha V-Star 250. Here are the main reasons why your motorcycle is not sparking: Damaged spark plug wire; Worn-out spark plug; Weak battery Look at where the spark with comes through the cowl and see if it is chafed or cracked. Later, I pulled my plug and did a spark test in the dark in my garage, and it had spark. Looking disgusting I'm having problems of weak spark. So, today I replaced all of the spark plugs. Jan 25, 2007 · 1989 yz125 weak spark. 013", low oil switch good, tried unplugging low oil wire and coil ground wire still no go, tested a new icm without any luck, stator tests good as per ohm A strong spark should be a bright blue color. It. I have a machine on its 4th coil. Be polite to your fellow's and keep all posts motorcycle related (examples are stories and pictures with your bike, riding equipment not needed for a nice vanity pic) the moderation here will be light as long as it is on point. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. Hello I have a 1988 CR125R that just lost spark. A yellow or orange spark is generally a weak spark. IM STUCK! You'll have to look up the proper spark specs for your specific motorcycle. Remember, you need four things to make your bike run: air, fuel, spark and compression. The owner changed the cdi, ignition, ignition coil, stator, with no success. When it does have spark, it’s very weak, but enough to run the engine. and of course to complete the tri (fuel air spark) The spark appears to be as bright as the sparks on the other four burners. I have a motorcycle that has a dying coil, but when it warms up the spark completely cuts out and dies. Checked both sparks again and the spark on the rear was really weak, plug on the front however has been running hot by the looks of it, loads of white deposit and again very faint spark so swapped that out. Dry cold compression test was ~180 psi (3 cranks) +-3. They contain a lot of thin wires, they get hot, wet, and generally live miserable lives. Low voltage battery, a bad electrical connection, or old spark plugs can be causes. Use a business card to set the gap between the flywheel and the coil when you put the coil back on. Business, Economics, and Finance. I have replaced the ignition coil, spark plug, cleaned the stator and pulse coil, cleaned the ignition coil ground and stator grounds, cleaned all wire connections checked kill switch. Reverse the pick up coil wires. How to test for spark on a motorcycle. I have a spark now, but no ignition of fuel. 58K subscribers in the SubaruForester community. We first checked all three plugs with an inductive strobe. If you notice slipping right after shifting, it's usually the springs You probably could’ve used them for a while more. It can encompass anything of… What can you guys tell from this spark plug on my 50cc 2 stroke scooter? This is the spark plug that was in my scooter before and is not the same kind as the manufacturer specified but now changed to an appropriate one. On my last three rides before it stopped working it took more and more kicks to start until it didn’t. This is a VERY common problem for the second generation r6 so that’s what my bet is on. Engine is running rough at idle and cuts out at any throttle position more then 20%. I'm having trouble starting my bike, when I checked the spark it was weak and yellow, The battery seems fine when I checked it, I have electronic ignition and a new Bosch coil. Ahh. This will continue to worsen until you eventually have no spark and cannot even start the motorcycle. 5%, ~120 psi (1st crank) . After, it sort of ran, but cracks and popped a lot, would bog down on acceleration. Then the coil harness. Very weak spark, although perhaps a tiny bit stronger than the 2nd (suspect) coil. It can help to view the spark at night. In my opinion, I see the NGK spark as longer and brighter. (And to answer your other question, the gap needs to be close, but not dead nuts on to run. Posted by u/coolman1987us - 1 vote and 14 comments This is a short on the high tension side of the ignition system. Remove your spark plug cap and wire from the spark plug by pulling it free. 2001 Honda Shadow Ace Deluxe. So if the distributor is off by a significant number of degrees, the mistimed spark won’t do anything. Ran it dry in November. All of my tests have come back to the ignition coil being faulty. Sometimes a weak spark can be hard to see doing the ground against the engine method. 2M subscribers in the motorcycles community. Which it most likely did, with only 900 miles on 5 year old bike. 1. Spark has to be a good blue spark, a weak yellow spark won’t run the bike. 2 An injector that is leaking down. As evidenced by these plugs, it ran rich before and is dumping fuel now, but this was after lots of cranking. Posted by u/FreeBadMedicalAdvice - 2 votes and 9 comments Bike’s had some repairs. Bike has 88,000km Share Posted by u/easterracing - 2 votes and 11 comments So, we went through fuel lines, carbs were pulled and cleaned, checked air flow, just to make sure the simple stuff was taken care of and eliminated. A week later, it is… When I test the spark plug wire to a ground it sparks great, nice white/blue spark that jumps further than necessary. . You local bike shop will probably be able to do it for you or point you to In fact, skip the tester entirely. As someone else mentioned , run it in the dark to better assist in identifying the source. At this point I've traced the problem down to a weak spark when engine is warm. I got the bike home and cleaned out the carbs and tank and put some new fuel in, and tried to kick it over to no avail. I currently do not have a key to this bike as the fellow who sold it to me lost it so I hotwired the ignition. From my understanding, the spark should always be blue and the only thing that adjusts is the speed the spark occurs at. I tested the ignition coils individually and found that they created spark. Plugs could also be fouled from a fueling issue, but that would generally present running issues in all conditions. This will also cause fuel fowling across the plug. None will run the engine. Often, the culprit is a weak spark in the ignition system, a common issue that riders face. I'm not sure how that's set up on that particular bike, but any number of issues can crop up with those two to make a weak spark. Even though the aluminum burner's ( part 10C ) gas port looks similar to the others, I have cleaned it. A single spark plug is cheap, but a single engine is not. 54K subscribers in the scooters community. check the rectifier/regulator based on resistance reading method stated on KLX service manual. also the CDI. Make sure the spark plug hole and threads are clean, same goes for the top of the spark plug and the plug wire. /r/moped, or mopeddit, is for discussion and celebration of vintage mopeds on Reddit. My bike broke down around three weeks ago and with an oil test through the spark plug hole it was determined the piston rings needed replacing. Whoever uses an impact wrench or driver to fasten screws/bolts on your motorcycles, please stop! Invest in a torque wrench and follow the factory specified torque, or at least use a socket wrench. Parts on order include front/rear calipers and master cylinder, clutch plates and springs, clutch cable, pod air filters, new battery and housing, miscellaneous bolt kits, clip on handlebars, new gauges and indicator lights. the spark plug has ~5k resistance. NGK Spark plugs were new shortly before winterizing it. It has spark and compression, but I suspect the spark is weak as if I spray starter fluid into the cylinder it does not ignite. Ran fine before sitting for a year. Put the bike in 5th or 6th gear on the center stand. In this guide, I can see while testing both 2 coils and 2 different types of spark plugs that my spark is an orange arc, both from the spark plug and when directly connecting a wire to the center of the coil. A motorcycle you'll need to bring up the RPMs before it'll really charge (although it charges at idle). It has a very weak spark if I use my light tester but not enough to jump any gap on the plug It has a new coil and have tested 2 known working coils, rotor magnet is good, airgap set at . IF COILS - any good advi A place to share this magnificent obsession. But point 5 means that D390 can only support a single spark plug, whereas the D400 has space to support Triple Spark Plug and this is purely a system to extract max mileage! I have heard that the clutch plates are also interchangeable between the two machines, however I haven't tested it. The Scooters subreddit is for road-legal motor scooters (gas or electric), a type of motorcycle with a… No spark at all. Spark seemed weak and somewhat intermittent. Good spark is bluish white, and weak spark is yellow to orange. Doesn’t happen as frequently when it’s been sitting for 2+ hrs. Is the problem most likely the coil(s) or the BB? battery is good - get same spark results with 12v on battery or 14v on charger. I got a reading without cap and could get an occasional reading through just the cap after wiggling the meter leads around. Couldn't fix it that day. Still, crank no start. Welcome to 10 thousand HP motor brush replacement! This is a old ass DC motor we replaced with a brand new Siemens Synch motor. Let's talk about KTM Motorcycles and their subsidiary bikes like husqvarna here! Your favorite bike, accessories, problems, advice and everything in between! We have a live chat box also! It feels like misfire moved somewhere else (cylinder/s with most impedance). I opened the bike up and found that one of the spark plugs was barely burnt. It has a spark but the spark looks maybe a bit weak. Carbs where pulled and cleaned, no change. You'll probably have to rotate the wheel a bit to get it to click through the gears. Battery. It sounds odd but on a cold bike with a weak spark, tbe fuel 'puts out' the fire rather than burning properly. 11 votes, 12 comments. The. A burst of start fluid or carb spray down into the venturi will tell you if it is good to run. Facebook Twitter Reddit Most of the time if you have no spark or weak spark it’s a bad coil. I ensured I had 12. I think it may be running rich, but I could also have a weak ignition system. 010 copper wire through the idle jets,carb cleaner etc and she's Yes, weak spark or sometime it is not sparking at all but the frequency is still low to trigger engine ligh/trouble code. Hi all, hoping to get some insights on a weak ignition in this '83 750 Nighthawk. My question is how can I troubleshoot weak spark? 1. I’d say start with a stator. So I have 3 coil packs: One - without a doubt, would not run this engine. A bad or weak battery can make a car or motorcycle act crazy. Or 2) weak spark. I have a Yamaha Mio 125, which is fuel injected, it had been having issues running where it would start and then idle weakly before stalling. Whereas sometimes the OEM spark looked to be at a sharper angle between the central electrode and the tip. I can easily start the bike when cold, but if I stall it or turn it off then restart it the spark is too weak to start the engine. Manufacturers like to use weak clutch springs, especially in smaller bikes, to have a lighter clutch pull. IF COILS - any good advice on going to single coil, double lead? Thanx all - 0G Here’s a hypothesis. Fuel is two days old. Help ! Motorcycle coils I'm finding are kind of finicky beasts, You need to get a multimeter and check it. You may want to go ahead and replace the spark plug and if possible the plug wire. The alternator in a car starts producing electricity as soon as the car is running. Just maybe not as strongly as they should be? Maybe I'm wrong and the spark is just fine but it's my best guess at Good compression but weak vacuum on 125cc motorcycle (wont/rarely starts) I'm scratching my head at this one. I have replaced the spark plugs, ignition coil, points, and condenser. With everyone and their dad "knowing something about motorcycles", there is a ton of… Hi guys Back from my last post trying to get my SV running again; Compression test was fine, 185/190psi on both cylinders. 010" in some cases. Feb 22, 2024 · Struggling with a motorcycle that just won't start or runs inconsistently can be frustrating. Coils and wires can be tested for proper resistance with a multimeter set on ohms. What are signs/symptoms of bad spark plugs? 36K subscribers in the Fixxit community. When I take the plug out of the hot engine and kick it the thing hardly produces a spark if at all. 3KG Steel Motorcycle Chain Lock Padlock + 110dB Yellow Alarmed Motorbike Brake Disc Lock + 1. eloskl kff dyl zbcjvu dfaxvdpr lxtp lja sefng ibaqi kwl