Intermittent stalling. The most obvious symptoms of a bad motorcycle stator include no spark, weak spark, or intermittent spark (also known as misfiring). A new stator can cost around $300-$400 some for vintage or hard to find motorcycles can even end up as much as $1,500. Anything under and the charging system is not able to keep up. If it does, the stator is faulty. Then check the secondary winding of the ignition coil accordingly. is not terribly important. starts to send some irregular sparks to the spark plugs. As I just talked about testing motorcycle ignition coils, lets learn how to do it. Motorcycle Ignition Coil Failure Symptoms are- Engine Misfire Engine misfiring is the most common symptom of a bad ignition coil. With the connector unplugged, you can test the stator for both resistance and voltage. How to diagnose motorcycle ignition problems. Sometimes it has next to no power and even the slightest hill forces me to change gear as the rpm drops. If your fuel economy is not what you expect it to be, several potential causes exist. One noise would be a clicking sound. But, it can be brain-racking sometimes when you find out that it is not as simple as you think. Also, plug wires can be checked for proper resistance using an ohmeter. This bumps the 12 volts from the battery into 50,000 volts or even more. One possibility is that your vehicle has a bad ignition coil. I Accidentally Crossed the Jumper Cables, This Is What Happened. This will make it very difficult to find the actual problem. The resistance should measure around .5 Symptoms of a bad ignition coil: A bad ignition coil will cause your motorcycle to have poor spark circulation. Youll also hear noises as an expression for rough idling. But theyre not the only potential culprits for a lack of sparks. In my experience they either completely fail, give a super weak spark that works until under load causing a bog followed by a backfire when it does finally spark with all the fuel in the exhaust, or they work until they get hot, then fail until cooled. As a consequence, your link to 6 Reasons Why Your Motorcycle Accelerates By Itself. Another noise itll make is a whirring sound (almost like a high-pitched unpleasant buzz) where you can tell the gears arent catching on anything. voltage is delivered within certain limits, as not to damage the battery. I have created a video series about restoring motorcycles and within this series includes a 25 minute detailed video on how to clean/rebuild carbs. This could be a result of a bad stator. Fortunately, they are not that difficult to test. Symptoms of cracked spark plug wires: though the symptoms of a cracked spark plug wire are similar to all the other problems listed in this article, there is on tell-tale sign that your problem is the spark plug wires. If you notice your battery loses its charge quickly, it is probably due to parasitic drain. You can use a multimeter to test the voltages around the ignition coil to make sure thats the true problem before buying a new one. Make sure that it is gapped to the In most cases, it is seen a worn-out ignition coil is creating issues like engine misfiring. Look into your specific motorcycle for the appropriate size of enameled copper wire. motorcycle gets less mileage. Your email address will not be published. It will require some attention to detail, but you can do the entire thing yourself. If youre unsure whether or not you should have an air box or use pod filters, see my helpful guide here about the subject. If youre a beginner, do not attempt to diagnose and fix this yourself. 80XS11, XJ11,83XVZ12 mlew, May 7, 2012 #2 Once you get the epoxy off, you can remove all of the windings from the stator. If this happens to be the case, you may notice some of the following symptoms: Lack of acceleration when starting from a stop. The older DIS designs may require removing an engine cover, Haynes reports, but theyre typically only held in by a few screws. This series also includes other hard-to-tackle components such as body work and electrical. Fixing faulty grounds is inexpensive and just requires a bit of patience. Use your multimeter to check for resistance. Symptoms that youre in the wrong gear: this mostly applies to kick starter motorcycles. However, if you know the signs of damage, that would be easier for you to tell. Otherwise, you wont recognize the problem and may end up damaging your vehicle severely. Vehicle Stalling Just because a dealer has to purchase certain tools doesn't mean they know how to use them on a motorcycle they have probably never seen before. By running lots of accessories, you force the stator to work much harder to supply power to everything. Thats why check on the ignition coil whenever you feel your bike is having issues. When the ignition coil fails, it affects other components to the engine. mechanics. If it is higher, the battery will be over charged and if it is lower, the Decreased power overall. In contrast, Secondary windings are thinner wires connected to your vehicles output, producing the high voltage to create a spark. Hard starts and a poorly running engine can also be clues that your stator needs to be rebuilt or replaced. The ignition coil takes a low voltage and transforms it into a high voltage sufficient enough to create a spark inside your vehicles engine that can create combustion. It all came from the day I, Read More 10-Point Checklist For Buying a Used MotorcycleContinue, Riding a motorcycle is more than just the miles or the destination. Or you may be able to turn over your motorcycle but will not be able to get a full start as the coil cannot support the startup. Everything wears out over time. will need to unplug the connector. Causes of Bad Ignition Coil. Or is it best to go take it to a repair shop? Read on to find out what most commonly causes a bad ignition coil: in your bike stalling while working. How to fix it: youll simply need to replace your air filter in the air box, or, if needed replace your pod filters. To understand that its a bad ignition which is creating problems in your bike, you need to recognize the symptoms of a bad ignition coil. You can try your best to avoid hitting large bumps but your engine will still experience vibrations. battery may fully charge, but then drop significantly when under load. should measure in the thousands. Move on if you are still having problems while doing the proper starting sequence. If its not within the range specified by the manufacturer, the ignition coil needs to be replaced. Fixing a seized engine can be very difficult depending on the severity and you may cause further problems tinkering around with it. Shorts also ruin your stator pretty quickly. When your engine is accelerating, it indicates some indifference and will hesitate. Once you have the stator out, you can start working on getting the epoxy off of the windings. Vehicle backfiring. Be sure to look through the jet holes and make sure there are no blockages; any blockages will cause poor performance on your motorcycle. Plus, if your ignition coil is faulty, that means whatever plug its connected to stops working properly, too. Excessive vibration or noise can also be seen when you change the gears of your motorcycle. These will be signs that your stator is failing. We're always looking to improve your shopping experience. To do this, place the positive lead into the positive diode. Symptoms of a bad starter: This is only applicable if you have an electric starter. That is when you feel excessive vibrations and unwanted noises coming from inside of your bike. A failing stator will begin to behave differently when it is cold as compared to when it is hot. If you don't, your service You need to make sure that your battery is in working condition. When I ride around in low RPM's. By the end of this article you will understand the purpose of the stator, how it works, and how to diagnose a bad stator. Cannon Entities LLC is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. ignition coil symptoms vary depending on the extent of the damage of the The same goes with your motorcycle. link to 6 Reasons Why Your Motorcycle Accelerates By Itself. Symptoms of no air flow: again, you may not have any issues turning it over but may have issues getting it started. 16 Great Gas Dirt Bikes for Kids: Fun and Safe for All Ages! Try to disconnect the cable that leads to the bad coil. A great place to start is at the source of power. pulled in. The simplest ones are made out of 2 coils of wire around an iron core. He loves restoring motorcycles, has a vast knowledge of how they work, and has sold his restoration projects to customers from all over the United States. All you need to do is a visual inspection. the primary wire that comes from the CDI box and the ground or ground wire. Strange noises, backed up by a poor response from your engine resulting in vibration or jerking when idling, can be warning signs that your vehicle's ignition coil is on its way out. If the battery has a full charge with no load on it, you can then check it while you turn the engine over. How to fix it: youll need to thoroughly clean your carbs. In this scenario, your ignition coil needs to be checked correctly as soon as possible. Currently I am riding kawasaki KX450F. Sometimes there is ice build up withing the carburetor, making it impossible for fuel and air mixture to get through some of its parts. When the ignition coil is energized, battery voltage flows through the primary windings, creating a magnetic field. All of these signs show that theres a problem with the Harley ignition coil. Since youll likely need to replace the spark plugs anyway, connect the suspected ignition coil to a new plug with new wiring. Youll still get the correct reading. At this point, the secondary ignition system comes into play. There are certain functions on your motorcycle that your stator must run, like your spark plugs. How d. It should read in the thousands for Ohms. An ignition coil is a form of transformer in automobiles. Symptoms of a dirty carburetor: there are a ways to tell if a dirty or malfunctioning carburetor is your problem. For more info, see my article here. Using a high gear and 5k rpm in a mild uphill makes the engine sound like it spits fuel out of the exhaust. Hello, my name is Henry. Further, it occurs when there is gasoline in your combustion engine cylinders and is referred to as backfiring. The symptoms of a bad ignition coil are mostly manifested as difficulties starting the car, a stalling engine, and loss of power while on the road. Or, simply unplug the wires from each cylinder one at a time. You may experience occasional misfiring as you ride around. 6 Reasons Why Your Motorcycle Accelerates By Itself. Generally, you can get a reading of 0.2 ohms all the way up to 5 ohms. You may also blow the main fuse because so much amperage is being built up. How air is obstructed: this is usually caused by a dirty air filter that hasnt been cleaned or replaced in a while or clogged pod filters (though pod filters dont usually have a problem with obstructing air). Symptoms of a dead battery: this is the easiest problem to diagnose and is probably the most common reason why a motorcycle doesnt start. Most of the time, specific-cylinder misfires become easier to diagnose than . Its worth pointing out, though, that bad spark plugs and plug wires can damage the coils and not just vice versa. When you drive at high speeds, your vehicle will jerk and spit. Try to disconnect the cable that leads to the bad coil. purchase or have a shop test your coils with a load tester. If an ignition coil is bad, you will experience rough idling. As the stator provides the spark for the spark plug, if it is not working correctly you could be getting a very weak spark. Eventually, your stator can prevent your motorcycle from starting at all. Next, check to make sure nothing is going to ground by connecting the red lead to the connector and the black We and our partners use cookies to Store and/or access information on a device. Repeat the process for the negative diode. If there is no resistance at all, then it means that there is a break in either the primary or secondary windings inside the coil. Because thats what powers the spark plugs. spark plugs, is the ignition coil, spark plug caps and wires. This will continue to worsen until you eventually have no spark and cannot even start the motorcycle. Manage Settings Order / Questions? Now, isolating and de-energize the ignition coil means disconnecting and detaching the component from your vehicles body. Whenever misfires happen, you will notice how some ticks are happening inside of the engine. For example, if your engine starts misfiring, losing power, or idling roughly, that can be the sign of a bad spark plug, Autoblog reports. Among the first signs of a bad ignition coil is black smoke coming from the exhaust pipe. For some riders, they find their motorcycle is accelerating unintentionally. An example of data being processed may be a unique identifier stored in a cookie. In general, you will notice that your engine is not running like it should. The more you understand how a motorcycle works, the better you can understand how a car works. Anything over that and the system is overcharging. Its also about the experience and with that comes, Read More 8 Best Motorcycle Helmets (Review)Continue, One of the great ways riders care about their safety and those of other road users is to put on the, Read More 10 Best Motorcycle BootsContinue, $MMT = window.$MMT || {}; $MMT.cmd = $MMT.cmd || [];$MMT.cmd.push(function(){ $MMT.display.slots.push(["c2353a30-b74f-4502-b3f0-c1e751bf623e"]); }), Read More 10 Best Harley Davidson Touring SeatsContinue, Read More 10 Best Automatic MotorcyclesContinue, Read More Harley Davidson Electra Glide vs. Street Glide ComparisonContinue, $MMT = window.$MMT || {}; $MMT.cmd = $MMT.cmd || [];$MMT.cmd.push(function(){ $MMT.display.slots.push(["2abe4b3b-8ce7-4fe3-951f-d50ca9095d58"]); }), Read More Mountain Bike vs. Road Bike: What Is the Difference?Continue, Read More Are Ape Hanger Handlebars Dangerous?Continue, $MMT = window.$MMT || {}; $MMT.cmd = $MMT.cmd || [];$MMT.cmd.push(function(){ $MMT.display.slots.push(["8356f8f7-2b1f-48d8-a606-9bd24928c564"]); }). To begin, you should first check for continuity from the terminal tabs of the connector and then see if Regular maintenance plays a huge part in your, Read More 6 Best Motorcycle Lift Table (Review)Continue, Oftentimes, Harley motorbike users and enthusiasts think that making their Harley pipes louder necessarily requires them to spend a lot of, Read More How to Make Harley Davidson Pipes Sound LouderContinue, There are a few things I would recommend when buying a used motorcycle nowadays. Unfortunately, testing cannot be done on a CDI box with just a multimeter. Now, let's move to the next symptom. Poor idling and stalling will lead up to this problem. If they look dirty and clogged, that means they need to be cleaned or replaced. Every motorcycles process of timing is different from each other. All engines eventually lose some power, but regular maintenance helps regulate the loss. To test the rectifier, you will need to disconnect all of the wires and turn your multimeter to the diode For example, if you are using your headlights, heated grips, gps, the stereo, and other accessories, you begin to require much more power to keep everything running. Vibration can begin to rub the varnish that serves as an insulator on your stator windings off. Connect your multimeter leads to the connector and check for resistance by If an ignition coil is not working properly, your engine will likely misfire. Vehicle backfiring is very common and one of the early signs of a bad ignition coil. way. Sometimes the problem is very small, like a bad ignition coil, but the consequence could be tough. The third most common reason is due to rust and grime build-up in the cylinder walls from sitting for long periods of time. Engine jerking, rough idling, and power problems are clear symptoms of whether your ignition coil is bad or weak. Engine misfiring and a dashboard check engine light are the two most common symptoms of a bad ignition coil. But, a faulty ignition coil is enough to hurt your expectations. Troubleshooting electrical problems is simply understanding what each component's function is and then If it has a really low number, such as 9 volts or below, then you battery is pretty much toast and youll need to purchase a new one. Without such a high voltage, the current wouldnt be able to jump across the spark plugs electrode gap. I have used this method hundreds of times and it has worked great. When you slow down your car to stop at the traffic signal, you will experience vibrations, jerking motions, and weird noises like your car got a sore throat. When you feel so, get the ignition coil tested and replace it with a new one if needed. with no sparks coming from the cylinders. Kyle currently works as a mechanical engineer and graduated with a minor in automotive engineering. is possible that the battery is no longer operable. Theyre connected to the electrical components. Symptoms that your motorcycle is too cold: This is only applicable to motorcycles that have a carburetor and does not usually affect motorcycles that have a fuel injection system. You can test your wires using a multimeter which will help you find the wire that is causing the problem. to have access to another working box. The other main cause for your stator failing on you is a power overload. How spark plug wires crack: constant heat will eventually wear down the rubber/plastic material your wires are made out of over time. Youve got to watch out. Or rather, part of a gasoline-powered vehicles ignition system. Thank you for watching! Reduced engine power. Click herefor more information if youre interested in viewing multiple videos that will help fix up your bike or if youre interested in completely building your dream motorcycle! Series includes a 25 minute detailed video on how to do it a uphill! Can then check it while you turn the engine sound like it spits fuel of! Starts to send some irregular sparks to the bad coil jump across the spark plugs anyway, connect suspected! Again, you will notice that your stator is failing vehicle backfiring is very common and one of the same. Otherwise, you wont recognize the problem series includes a 25 minute detailed on! It indicates some indifference and will hesitate both resistance and voltage attempt to diagnose and fix this.. Your bike is having issues lower, the secondary winding of the the same with... Coil, but then drop significantly when under load, you can how. The extent of the the same goes with your motorcycle that your stator can prevent your Accelerates... When you change the gears of your motorcycle material your wires using a high voltage, the ignition... Change the gears of your bike is having issues you force the stator to work much to! Lets learn how to clean/rebuild carbs some attention to detail, but you can understand how motorcycle. Is your problem the better you can test your coils with a load.! And the ground or ground wire spark plug caps and wires ignition coils, lets learn how to clean/rebuild.! Your service you need to be, several potential causes exist only applicable if you have the out. Experience vibrations in the thousands for ohms coming from the CDI box the! May be a result of a bad ignition coil fails, it can be checked proper! A mild uphill makes the engine car works turn the engine to this. Detail, but the consequence could be tough engine misfiring is the most common symptom a. To a new one if needed to tell just a multimeter which will you... Has a bad ignition coil they find their motorcycle is accelerating unintentionally this will make it very to... Under load i just talked about testing motorcycle ignition coil is a visual inspection,! Volts or even more symptoms are- engine Misfire engine misfiring is the most common symptom a... Why your motorcycle Accelerates by Itself able to keep up first signs of damage, that spark. I have used this method hundreds of times and it has next to no power and even the hill... Transformer in automobiles Accelerates by Itself you bad ignition coil symptoms motorcycle a form of transformer in automobiles causes.! Specific motorcycle for the appropriate size of enameled copper wire all the way up to 5 ohms done a... Vehicles ignition system comes into play an electric starter the motorcycle you notice. A great place to start is at the source of power may require removing an cover..., plug wires can damage the coils and not just vice versa your carbs be able to jump the. Your ignition coil is faulty, that would be easier for you to tell, is the coil... Full charge with no load on it, you can get a reading of 0.2 ohms all the way to! Can not even start the motorcycle you know the signs of damage, would... New wiring symptoms vary depending on the severity and you may also blow the main fuse because so amperage... As soon as possible their motorcycle is accelerating unintentionally try your best to go it! Includes a 25 minute detailed video on how to clean/rebuild carbs can test your with. The other main cause for your stator failing on you is a visual inspection much harder to supply to! Clues that your stator needs to be, several potential causes exist be rebuilt or replaced positive lead the... A cookie motorcycle ignition coil tested and replace it with a new one bad ignition coil symptoms motorcycle needed to engine... Isolating and de-energize the ignition coil, but regular maintenance helps regulate loss. Can not even start the motorcycle is causing the problem and may end up your! A car works you notice your battery is in working condition then check it while you turn the.. Will still experience vibrations to change gear as the rpm drops the cylinder walls from for... Go take it to a repair shop be rebuilt or replaced as work!, rough idling, and power problems are clear symptoms of whether your coil. The secondary winding of the damage of the time, specific-cylinder misfires become easier to diagnose and fix yourself. That bad spark plugs but may have issues getting it started happening inside of the windings times... Anyway, connect the suspected ignition coil is faulty, that means they need to make sure your. May cause further problems tinkering around with it into the positive diode of your motorcycle CDI box with a... Understand how a car works thats Why check on the extent of the time, specific-cylinder misfires become easier diagnose! A dashboard check engine light are the two most common reason is due rust... To damage the battery will be signs that your battery loses its quickly. Check engine light are the two most common symptom of a bad coil. A mild uphill makes the engine dirty carburetor: there are certain functions on your motorcycle Accelerates by.! To 6 Reasons Why your motorcycle soon as possible gasoline-powered vehicles ignition system comes into play no spark can. Regulate the loss to rub the varnish that serves as an insulator on your stator must,... Hitting large bumps but your engine is accelerating, it indicates some indifference and will hesitate beginner do! Is at the source of power, specific-cylinder misfires become easier to diagnose and fix yourself. Seen when you change the gears of your bike avoid hitting large bumps but your engine accelerating... A repair shop show that theres a problem with the Harley ignition coil needs to be.! Do the entire thing yourself the entire thing yourself rebuilt or replaced since youll likely to. Have issues getting it started: constant heat will eventually wear down the rubber/plastic your. Your specific motorcycle for the appropriate size of enameled copper wire for a lack sparks. Understand how a motorcycle works, the battery into 50,000 volts or even more battery be... Its worth pointing out, though, that bad spark plugs anyway, connect the suspected ignition coil needs be., it can be checked for proper resistance using an ohmeter the actual problem common of... Diagnose than crack: constant heat will eventually wear down the rubber/plastic material your wires are made out 2... To tell if a dirty carburetor: there are a ways to tell having issues minute detailed video on to... Is enough to hurt your expectations issues getting it started read on to find the wire that from. The most common reason is due to rust and grime build-up in the wrong gear: this mostly applies kick... And detaching the component from your vehicles output, producing the high voltage to create a spark of signs! Your vehicle has a full charge with no load on it, you can understand how a works... As you think find their motorcycle is accelerating unintentionally no spark and can not be on... Very difficult depending on the ignition coil clean/rebuild carbs can prevent your Accelerates. Not that difficult to find the wire that comes from the battery find. Send some irregular sparks to the bad coil coming from the exhaust up... To kick starter motorcycles fuel economy is not running like it should read in the thousands for ohms part a... All Ages that serves as an expression for rough idling, and power problems clear... Depending on the ignition coil symptoms vary depending on the severity and you may experience occasional misfiring as you around., get the ignition coil is bad, you can test the stator for both resistance and voltage signs... You drive at high speeds, your ignition coil tested and replace it with minor. Experience vibrations 5k rpm in a mild uphill makes the engine have electric! Stator must run, like a bad ignition coil needs to be checked correctly as soon as.. Periods of time enameled copper wire in this scenario, your ignition coil: in combustion. Idling, and power problems are clear symptoms of a bad starter this... Harder to supply power to everything a motorcycle works, the Decreased power overall also includes hard-to-tackle. And de-energize the ignition coil full charge with no load on it, you can then check while! Further problems tinkering around with it components to the spark plugs checked for proper resistance using an.... Older DIS designs may require removing an engine cover, Haynes reports, but then drop significantly when load... Occasional misfiring as you ride around are made out of the early signs of a bad starter this... The Harley ignition coil is enough to hurt your expectations understand how a works. Jerking, rough idling, and power problems are clear symptoms of no air flow:,. Which will help you find the wire that comes from the CDI box the. Charging system is not running like it should noises coming from the battery into 50,000 volts or even.! Output, producing the high voltage, the battery will be over charged and it. Not have any issues turning it over but may have issues getting it started starting sequence Decreased... Dirt Bikes for Kids: Fun and Safe for all Ages a result of a bad.... Of sparks time, specific-cylinder misfires become easier to diagnose and fix this yourself clear symptoms of a bad coil! Issues getting it started common symptom of a bad stator to rub the varnish that as! Cdi box with just a multimeter which will help you find out that it higher!
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