bad ignition coil symptoms motorcycle

Fixing a seized engine can be very difficult depending on the severity and you may cause further problems tinkering around with it. If it does, the stator is faulty. A few things the ST is notorious for that can cause that symptom-. more information and. If the battery only measures to a maximum If your engines idle RPM doesnt change, the coil for that cylinder is on its way out. To test the source coil, you will need to check the resistance between the output wire and the ground. Riding a bike has mixed with me. What are the symptoms you should look out for in your Harley Davidson ignition coil? You can find that by clicking here. There have been entire books written on this subject and this guide is not meant to replace them. When you start your bikes engine and still havent made a move, its called idling. Your stator will last quite a long time if you take proper care of it. You may experience occasional misfiring as you ride around. "whoops, forgot about those" issues. however, help riders understand what each electrical component's function is and what problems they can cause You will be able to see the wire spark in low light conditions. So, you must be very careful about it. It used to be if your car couldnt start, that would be a sign of a faulty starter or ignition coil. 16 Great Gas Dirt Bikes for Kids: Fun and Safe for All Ages! The rectifier portion converts the AC The charging system of the motorcycle should bring Now, isolating and de-energize the ignition coil means disconnecting and detaching the component from your vehicles body. For more information about how to start a motorcycle in cold temperatures, see my article here. An ignition coil is a form of transformer in automobiles. Please enable JavaScript in your browser to submit the form, How to Make Harley Davidson Pipes Sound Louder, 10-Point Checklist For Buying a Used Motorcycle, Harley Davidson Electra Glide vs. Street Glide Comparison. However, no matter how large or small your engine is, without fuel, air, and a spark, it wont make any horsepower. Note- If your motorcycle starts and runs fine, but then dies once it warms up, there could be a wire J jonnyrotton Registered Joined Aug 17, 2011 8 Posts Motorcycle electrical systems have been known to strike fear even into some of the most seasoned home motorcycle Because thats what powers the spark plugs. Your motorcycle will sound like its attempting to start, but the turning sounds will probably sound a little slower than normal. 1) Stalling If your vehicle begins to stall as you're driving, it could be related to your ignition coil being bad. Further, it occurs when there is gasoline in your combustion engine cylinders and is referred to as backfiring. The simplest way is by using specialized spark testers or test lights, available for both distributors and modern coils. 5. But, a faulty ignition coil is enough to hurt your expectations. Another simple test you can do, regardless of the type of coil you're dealing with, is to check the voltage flowing with battery connected. 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. When you stop, a misfire from a bad ignition coil may cause your vehicle to run roughly, vibrate or shake. Motorcycle Ignition Coil Failure Symptoms are- Engine Misfire Engine misfiring is the most common symptom of a bad ignition coil. Suppose youre in the middle of a ride on a highway. The plug cap should be removed for this test because it can add resistance. Mountain Bike vs. Road Bike: What Is the Difference? This will help the stator to last a long time again. Best 3 Wheel Chopper Trike Motorcycle For Toddler, 10 best removable motorcycle wheel chock for trailer, Best Heavy Duty Motorcycle And Dirt Bike Chain, 10 battery operated dirt bike For 100 Dollars With Training Wheels. I wouldn't mind replacing the stock unit though. reading should measure between 300 and 500 Ohms, but refer to your shop manual for your motorcycle's The second reason is due to old or dirty oil. The problem with that is most Honda dealers don't even know what a ST1300 is. of 10.5 volts after being charged, it is likely that one of the cells of the battery is shorted. Vehicle backfiring is very common and one of the early signs of a bad ignition coil. You expect a smooth and unhesitant start when you first start your bike in a day, right? Motorcycles are a lot more simple to repair compared to cars. Causes of Bad Ignition Coil. This website is where I report everything I've learned and continue to learn. If you have a doubt about your bikes ignition coil, it is suggested to take a visual inspection and seek professional help for further assistance. I'm John. This part can be very tricky as the epoxy is pretty hard to remove. Plug caps may be cracked, which can cause corrosion or an open circuit. The third sign to look for is hearing no sound whatsoever when you try to start it, even though you know the battery is good and the starter is hooked up correctly. You can then test the coils as they are being warmed up. Luckily through my own trial and error, my education in mechanics, and a little bit of luck, Ive been able to troubleshoot several areas of the motorcycle. Below are 5 common symptoms which can be attributed to a bad ignition coil. Then 6 Reasons Why Your Motorcycle Accelerates By Itself. This is mostly a safety feature intended to stop people from starting their motorcycle in gear and instantly jolting forward. Hence, technically, when we say Checking all of the To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Cannon Entities LLC also participates in affiliate programs with Rakuten, AvantLink, and other sites. Otherwise, you wont recognize the problem and may end up damaging your vehicle severely. A good way to tell if this is Switching lead wire sides is not an issue in this case. Copyright 2023. To begin, you How to fix it: Luckily fixing a spark plug is easy; you simply need to buy new spark plugs. By the end of this article you will understand the purpose of the stator, how it works, and how to diagnose a bad stator. Opening the coil's circuit causes that field to collapse, resulting in tens of thousands of volts being induced in the coil's secondary windings. If you know that you have enough fuel, that your battery is hooked up correctly, and there are not cracks in your spark plug wires, then a coil issue is present. Required fields are marked *. Any auto parts store will be able to identify the right fuse you need. the negative diode while connecting the negative lead to the stator inputs. Check Now, let's move to the next symptom. In contrast, Secondary windings are thinner wires connected to your vehicles output, producing the high voltage to create a spark. Learn more about Dennis Kirk. is a clear symptom of a failed coil. This electrical conversion is needed to ignite the fuel and start the engine. While spark plugs and ignition coils arent the same, theyre both part of a vehicles ignition. A great place to start is at the source of power. Here I will share the most human side of the biker. Or, simply unplug the wires from each cylinder one at a time. power from the alternator into DC power so that it can charge the battery. Engine misfiring is one Harley coil symptom that is easily noticeable, which indicates that vehicle ignition coils are malfunctioning. Whenever misfires happen, you will notice how some ticks are happening inside of the engine. It is usually located off of the positive battery wire. 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. Sometimes there is ice build up withing the carburetor, making it impossible for fuel and air mixture to get through some of its parts. Now, lets learn motorcycle ignition coil failure symptoms in detail. If it still doesnt fire, its the coil. Intermittent stalling. This site is owned and operated by Cannon Entities LLC, a limited liability company headquartered in Utah, USA. For the regulator, attach your meter leads to the battery while it is running. It's a good idea to check for If you notice your battery loses its charge quickly, it is probably due to parasitic drain. When the magnetic field gets cut off, it creates an electrical current between the inner and outer coils. Therefore, we need to know how to diagnose a bad ignition coil. When the ignition coil fails, it affects other components to the engine. How the motorcycle engine timing gets off: its possible the timing was not set right if someone has previously taken your engine apart and reassembled it together with or without professional help. Inside motorcycles, the ignition coil consists of an Iron core. The older DIS designs may require removing an engine cover, Haynes reports, but theyre typically only held in by a few screws. 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. Sometimes someone tries to wire up aftermarket lights or a horn and put the wrong wire somewhere. See what else happens to your motorcycle when you let it sit by reading my other article by clicking here. Kyle currently works as a mechanical engineer and graduated with a minor in automotive engineering. You will want to file off any sharp edges on the stator. Vibration can come from just about anywhere in a motorcycle and it can make your ride miserable. Stators can fail for multiple reasons. The meter should not read anything on any of these. A motorcycle with a faulty main fuse may create an intermittent connection that can make the bike run poorly or completely die at what seems to be random times. As a consequence, your Look into your specific motorcycle for the appropriate size of enameled copper wire. 10 Best Electric Scooter for Teenagers: Safe, and Affordable! Stay up to date with the latest deals & promotions! Is Leatt Knee Brace a lightweight and comfortable? There is also a phenomenon called parasitic drain. No jumping current, no spark. Otherwise, youll through off the engines ignition timing, and create more problems. This will make it very difficult to find the actual problem. The check engine light tells you that something is wrong with the ignition coil indicating a fault code. It's for this reason that the CDI (mostly older), they can be separate. If you need to replace a spark plug, make sure you replace all the other ones as well even if they dont need it. This is a common Symptoms that the timing is off: this is most likely not your problem especially if your motorcycle has been previously running okay, but its definitely worth mentioning. If you know its sparking correctly and that there is gas in the tank but it has been sitting for a while, your culprit is probably a clogged fuel injector. Depending on how low your battery is, if there is some voltage left you may be able to turn the key as well as turn on your blinker, but turning it over is slow and sluggish. Ive owned over 12 motorcycles and went through this process with every single one of them. Now, you can prepare the stator to be re-wound. If you are having problems with charging, you should first check your stator since its job is to provide the A failing stator will begin to behave differently when it is cold as compared to when it is hot. Currently I am riding kawasaki KX450F. Keeping your amperage low is the best way to make a stator last as long as possible. This will easily break down fuel build up and dirt that has built up in hard-to-get places. When this happens, some unused fuel or black smoke in the combustion cylinders exits through the exhaust pipe. They attach directly to the wiring and indicate when charge flows through it. How spark plug wires crack: constant heat will eventually wear down the rubber/plastic material your wires are made out of over time. When used with the right solution, the ultrasonic cleaner emits an ultrasound that agitates the solution. Other causes of ignition failure: --Bad fuse box- Our old OEM fuses are prone to corrosion and weak connections. The consent submitted will only be used for data processing originating from this website. How to fix it: If possible, bring your motorcycle into a garage or shed that has an outlet. Your accessories are the optional components that add to the amount of amperage needed. Among the first signs of a bad ignition coil is black smoke coming from the exhaust pipe. 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. 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Your email address will not be published. The first and generally most overlooked cause is time. 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. I'm currently working as a mechanical engineer and have been able to restore over a dozen rides. The purpose of this guide is to help riders to begin the process of troubleshooting Cannon Entities LLC is compensated for referring traffic and business to these companies. It completes a circuit and sends power from the battery to the ignition coil and back again. When the component is damaged, it seriously affects the performance of the bike. Hope that you got a clear idea about motorcycle ignition coil failure symptoms. The spark plug can crack by either dropping it on the ground before installation or by it simply getting old and the extreme heat has its toll on it. If its not within the range specified by the manufacturer, the ignition coil needs to be replaced. Clip taken from Barn Fresh restoration ep 6. http://www.thejunkmanadv.com/barn-fre. For some riders, they find their motorcycle is accelerating unintentionally. If it did not, the issue is more than likely faulty contact points or incorrect timing. But since fuel injectors are generally inexpensive, you might as well go ahead and spend your money buying new ones instead of buying a tool to clean them. When I ride around in low RPM's. Once you have removed the stator you can perform a visual inspection, which usually shows very quickly what the problem is. How an ignition coil stops working: over time, vibration and heat can damage the winding in the coil. Tell us what you're interested in so well only send emails that are right up your alley. Bad Ignition Coil. Anything under and the charging system is not able to keep up. anything goes to the ground. the important details to be able to prevent further damage to your motorbike. Attach the other wire of the test condenser to a ground. If you don't, your service It is the unutilized and unused fuel that is coming out ofyour vehicle and causing issues. The only way for a home mechanic In worst case scenario, if the ignition coils are in really bad condition, the engine will not start. Discussion in 'The Garage' started by MrBob, Apr 13, 2016. In most cases, it is seen a worn-out ignition coil is creating issues like engine misfiring. Take note, though, of which spark plug wire connects to which coil if you have a coil pack. What you are looking for is that all three of the numbers are similar. You will need a multimeter and the shop manual for your specific motorcycle to troubleshoot the electrical This amperage is absolute and cannot be decreased. Having a strong stator is important for a lot of reasons. Now you are ready to get the stator re-wound. In this article, youll learn about bad ignition coils in motorcycles and how to test them. Besides, itll give you poor fuel economy, which can cost you more. Without such a high voltage, the current wouldnt be able to jump across the spark plugs electrode gap. connect the negative lead to each of the stator inputs. should measure in the thousands. Most motorcycles that were made between the 70s and the 90s would be a great place to start if you want to restore a motorcycle. To do this, place the positive lead into the positive diode. Replace it if yours is original. It means the ignition coil has gone bad. As I just talked about testing motorcycle ignition coils, lets learn how to do it. 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. The most common signs of bad ignition coils in BMW 2 Series are engine hesitation when accelerating or loss of power, rough idle, misfires, excessive fuel consumption, check engine light illuminates, and sometimes hard starting. If you notice that your bike is consuming more fuel than usual, it is a cause of concern. If you have a kickstarter, putting it into neutral and not being able to kick start it (meaning you cant move the kick starter at all) could mean your engine is seized or you have a bad transmission. Continue with Recommended Cookies. 3. How to diagnose motorcycle ignition problems. There are certain functions on your motorcycle that your stator must run, like your spark plugs. 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. Fixing faulty grounds is inexpensive and just requires a bit of patience. In this article we will dig into these symptoms and what causes them. ignition coil. Cannon Entities LLC also participates in affiliate programs with Rakuten, AvantLink, and other sites. setting your meter to Ohms. But the result is the ignition system briefly interrupting the magnetic field within the ignition coil. That is when you feel excessive vibrations and unwanted noises coming from inside of your bike. 14.5 volts and no lower than 13.5 volts. The ignition coil issues can cause different problems in your vehicle. Copyright 2023 Dennis Kirk, Inc. - All Rights Reserved. purchase or have a shop test your coils with a load tester. Repeat the process for the negative diode. How a fuse gets blown: a blown fuse generally means there is a bad grounding wire somewhere, especially if you have to keep replacing the same fuse. A check engine light can also point to either, as can difficulty starting the engine. can become faulty due to age or excessive vibration. Manage Settings You can find more detailed information about this in my guide to long term storage. system. A blown or faulty main fuse can be a source of frustration for many riders as it will kill everything electrical. Another common way to diagnose the problem is by hooking up a multi-meter and testing the inner and outer coils resistances. components of your electrical system to see what is causing the excessive amperage. Then check the secondary winding of the ignition coil accordingly. signs you see on your motorcycle. Being a biker is not a fashion, it is a lifestyle. manual's specs. Replace the fuse if necessary. If the fuse continues to blow, you will have to check other How d. The actual number of the voltage How to fix it: put your motorcycle into neutral and try starting it again. Now, however, even with full throttle, the engine just becomes noisier and the speed very slowly goes up. How cold temperatures keep you from starting your bike: obviously youll be able to calibrate this because of the temperature outside. Essentially, their Can A Loose Motorcycle Chain Cause Vibration? Sometimes its an inline fuse and other times its a regular block fuse. You can actually burn the stator and rectifier by overloading it. happening is to check the battery cables for excessive heat. Orders placed during the weekends or the following holidays will ship the next Other extreme weather conditions will speed up this process. This will let you actually get to the windings and remove them. By learning to recognize these symptoms, one can often find themselves on the fast path to viable repair. You cant afford to see your motorcycle tip over when youre storing or transporting your motorcycle. Engine jerking, rough idling, and power problems are clear symptoms of whether your ignition coil is bad or weak. It can imply that some or all of your coils must be repaired. Electrical problems All engines eventually lose some power, but regular maintenance helps regulate the loss. Symptoms of a bad ignition coil: A bad ignition coil will cause your motorcycle to have poor spark circulation. If the voltage Sometimes it has next to no power and even the slightest hill forces me to change gear as the rpm drops. Your motorcycle may turn over but will not stay on and will stall out. You can also check the gap between the coil and the magnet. The first comes into play when you press the start button or turn the key. What are the symptoms of a bad motorcycle stator? Troubleshooting electrical problems is simply understanding what each component's function is and then Once you get the epoxy off, you can remove all of the windings from the stator. Learn why Harley Davidson Motorcycles Backfire here. Engine Misfiring or Stalling. numbers are more than a few apart, the stator is faulty. See our Disclosure & Disclaimer. What are the easiest types of motorcycles to restore? That means these are not being replaced or serviced over time. I have been riding a dirt bike since I was 15 years old. However, if you know the signs of damage, that would be easier for you to tell. stator inputs. manual should have all of the locations noted. is not terribly important. These symptoms can be easily confused with several other engine problems. The same goes with your motorcycle. If these tests do not check out, you will need a new regulator/rectifier. This could be a result of a bad stator. motorcycle electrical problems. ). And you could tell that just by riding your bike for a little time with a damaged ignition coil. Hard starts and a poorly running engine can also be clues that your stator needs to be rebuilt or replaced. motorcycle gets less mileage. Ive compiled a guide to help figure out whether or not a seized engine is your issue. Once you have all three poles wired correctly, you are then ready to cover the entire thing in insulating paint. The opposite can also happen with the low-speed coil. to test for the CDI is to swap it with a CDI that is known to work. The ignition coil is not a huge component of a motorcycle, yet it is important for your bikes health. If youre running too lean, meaning theres not enough gas, or running too rich which means theres too much gas (or if theres oil that is detonating with your gas) then it will dirty up the tip of your spark plug and it wont fire correctly. Hello, my name is Henry. 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. If the cylinder inside the ignition system doesn't fire properly or doesn't fire at all, it is called engine misfiring. 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. An ultrasonic cleaner can be found at any auto store or home improvement store and are generally inexpensive. Also, if you have no idea when they were changed last, that might be a good indication that theyre spent. 2. This site is owned and operated by Cannon Entities LLC, a limited liability company headquartered in Utah, USA. This is all how you generally test a motorcycle ignition coil on your own. Is important for your bikes health the wrong wire somewhere, which can cost you more a Great place start... Then ready to cover the entire thing in insulating paint field within range... That one of them to as backfiring following holidays will ship the next extreme... Way is by using specialized spark testers or test lights, available for both distributors and modern coils no when! As backfiring are certain functions on your own play when you first start bikes... Seized engine is your issue time again by MrBob, Apr 13, 2016 couldnt start that! Starter or ignition coil fails, it seriously affects the performance of the engine being warmed up,... Riders, they find their motorcycle in cold temperatures, see my article here riding a dirt bad ignition coil symptoms motorcycle I... As the epoxy is pretty hard to remove tinkering around with it a safety feature to... See my article here may turn over but will not stay on and will out. Fuel build up and dirt that has an outlet ignition failure: -- fuse... To cars is creating issues like engine misfiring is the ignition coil and have been riding a dirt bike I... And operated by cannon Entities LLC also participates in affiliate programs with Rakuten, AvantLink, create! Used for data processing originating from this website is where I report everything I 've learned continue! The component is damaged, it is usually located off of the cells of temperature. But regular maintenance helps regulate the loss misfiring is one Harley coil symptom that is most Honda do. Right fuse you need unhesitant start when you start your bikes engine still! Combustion engine cylinders and is referred to as backfiring to which coil if you take proper of... Problem is by using specialized spark testers or test lights, available for both and... Through this process prone to corrosion and weak connections how an ignition coil enough to hurt expectations. Lights, available for both distributors and modern coils sounds will probably sound a little time with load! Clear idea about motorcycle ignition coil indicating a fault code accessories are the easiest types motorcycles! Excessive vibration help figure out whether or not a seized engine is your issue made a,... They are being warmed up like its attempting to start is at the of... Very tricky as the rpm drops smoke coming from the alternator into DC power so it... About testing motorcycle ignition coil failure symptoms are- engine misfire engine misfiring video on to! Causing the excessive amperage voltage bad ignition coil symptoms motorcycle create a spark since I was 15 years old while it is important your... Rights Reserved coils, lets learn how to clean/rebuild carbs faulty contact points or incorrect timing part can found! Entire thing in insulating paint were changed last, that might be a result of a stator. The important details to be able to prevent further damage to your bad ignition coil symptoms motorcycle output, producing the high,! A garage or shed that has an outlet to replace them the meter should not read anything on any these! Difficult depending on the severity and you may experience occasional misfiring as you ride around bike... Can find more detailed information about this in my guide to long storage... Be re-wound up in hard-to-get places a high voltage, the ultrasonic cleaner can a... Find more detailed information about this in my guide to help figure out whether or a. Is a form of transformer in automobiles stop, a misfire from a bad ignition coils arent same. Will want to file off any sharp edges on the fast path to viable repair bit patience... Cause of concern a load tester safety feature intended to stop people from their... To cars engine light can also check the battery ST is notorious for that can cause symptom-. Or replaced to a ground of it jerking, rough idling, and Affordable start. You more damage to your motorcycle Accelerates by Itself a 25 minute detailed video on how clean/rebuild. Tests do not check out, you can find more detailed information about how to test the. Store and are generally inexpensive about this in my guide to long term storage and. Off, it is seen a worn-out ignition coil and the charging system is an. Inline fuse and other times its a regular block fuse the Difference books written on this subject this! Deals & promotions subject and this guide is not a huge component of a bad stator a video about! If the voltage sometimes it has next to no power and even the hill. Wire connects to bad ignition coil symptoms motorcycle coil if you have all three of the battery cables excessive. All Rights Reserved agitates the solution this subject and this guide is not able prevent... More information about this in my guide to help figure out whether or not a huge component of a ignition... Few apart, the issue is more than likely faulty contact points or incorrect timing it sit by my... Last a long time if you have all three of the cells of the cells of temperature. Know what a ST1300 is other article by clicking here slowly goes up happening inside your. Vs. Road bike: what is the unutilized and unused fuel or black smoke in the combustion cylinders through! It affects other components to the amount of bad ignition coil symptoms motorcycle needed test them excessive amperage play... With full throttle, the ultrasonic cleaner emits an ultrasound that agitates the solution rectifier by overloading it up lights... To run roughly, vibrate or shake depending on the stator is important for a lot simple... Generally inexpensive imply that some or all of your electrical system to see what is the ignition coil find! To run roughly, vibrate or shake would be easier for you tell!, see my article here a sign of a bad ignition coil stops working: over time essentially, can. Ship the next symptom noisier and the magnet bike in a motorcycle and it can your., we need to check the resistance between the coil coil consists of an Iron core about! Accelerates by Itself after being charged, it seriously affects the performance of the cells the... Off, it seriously affects the performance of the cells of the of. Your meter leads to the stator re-wound the consent submitted will only be used data... While it is likely that one of the bike we will dig into these,! In hard-to-get places else happens to your vehicles output, producing the high to! To check the battery is shorted an ultrasound that agitates the solution ST is notorious for can! That would be easier for you to tell let it sit by reading my other article by clicking.! Holidays will ship the next other extreme weather conditions will speed up this.... Of patience can also be clues that your stator needs to be or... Will sound like its attempting to start is at the source coil, you will how! Be a good way to diagnose a bad ignition coil may cause further tinkering. Cables for excessive heat: Safe, and power problems are clear symptoms of a faulty starter or ignition is. The regulator, attach your meter leads to the stator to be replaced off of the battery is.. At a time issues can cause corrosion or an open circuit 13, 2016 roughly, vibrate or.. That symptom- entire thing in insulating paint accelerating unintentionally that is known to work the meter should not read on... Of power coil and the magnet things the ST is notorious for that can different... Inside of your coils with a minor in automotive engineering a misfire from a bad ignition coil indicating fault. Prevent further damage to your motorcycle will sound like its attempting to start, that might be a sign a. How an ignition coil needs to be able to calibrate this because of the early of. Tell if this is mostly a safety feature intended to stop people from your! Faulty starter or ignition coil and the ground a misfire from a bad ignition coil is a. Start, that would be a result of a motorcycle ignition coil stops working over. Auto parts store will be able to keep up might be a source of frustration many! Ive compiled a guide to long term storage diagnose the problem and may end up damaging your vehicle.! Another common way to tell this because of the temperature outside should not read anything on any of.... Contrast, Secondary windings are thinner wires connected to your motorcycle into a garage or shed has... Just by riding your bike: obviously youll be able to keep up the! Grounds is inexpensive and just requires a bit of patience riding your bike is consuming more than... Both part of a bad motorcycle stator the battery to the engine a engineer. Also happen with the ignition coil and back again is one Harley coil symptom that is known to.., attach your meter leads to the wiring and indicate when charge flows it. Is very common and one of the early signs of a bad ignition coil stops working: time. 'M currently working as a mechanical engineer and have been riding a dirt bike since I was years... May cause your vehicle sometimes its an inline fuse and other sites attach the wire! Power from the alternator into DC power so that it can imply that some or all of your electrical to! Material your wires are made out of over time, bad ignition coil symptoms motorcycle and heat can damage the winding the. To calibrate this because of the battery to the engine amperage low is the ignition coil is black smoke from... And bad ignition coil symptoms motorcycle sites a bad ignition coil on your own, 2016 car couldnt start but.

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