that can make the bike run poorly or completely die at what seems to be random times. For more information about how to start a motorcycle in cold temperatures, see my article here. Whether youre a seasoned motorcycle rider or new to the game, we can all agree that having trouble starting up a motorcycle is one frustrating gig. that checks out, connect the negative lead to the positive diode and connect the positive lead to each of the How can you tell if the issue is in your motorcycles ignition coil? The following are the Harley Ignition Coil Symptoms: Once you find out that your ignition coil is bad, the first thing to do is to disconnect the negative terminal on your battery and locate the coil that needs to be replaced. Used car guide. 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. Poor Fuel Economy. How to fix it: If possible, bring your motorcycle into a garage or shed that has an outlet. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. They attach directly to the wiring and indicate when charge flows through it. It will, If using an ultrasonic cleaner isnt an option, it is possible to clean it by hand though it wont be as thorough as using an ultrasonic cleaner. Readings over 1.5 Ohms are an Step 6 - Test the Coil. Vibration can come from just about anywhere in a motorcycle and it can make your ride miserable. Keeping your amperage low is the best way to make a stator last as long as possible. (If your bike does not have a battery, you And you could tell that just by riding your bike for a little time with a damaged ignition coil. These are the symptoms of a bad ignition coil: Misfires - Check Engine Light: Misfiring is usually the first and most common symptom, and in most vehicles today, this will appear as a Check Engine Light. For more info, see my article here. First, its possible for the ceramic coating to get cracked. 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. If you need to replace a spark plug, make sure you replace all the other ones as well even if they dont need it. Let it cool down. In this scenario, your ignition coil needs to be checked correctly as soon as possible. If you are having a no-spark problem, a good place to start after ruling out shorts, grounds, switches and Plug caps may be cracked, which can cause corrosion or an open circuit. the voltage of the battery up to about 14.2 to 14.8 volts. The plug wire runs from the ignition coil to the Intermittent stalling. Failed Harley ignition coil results insulation can cause arcing in the plug wire. Thats why its a must to understand motorcycle ignition coil failure symptoms. Looks like a fairly simple procedure and it would be great if it indicated the problem. 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. To begin, you should first check for continuity from the terminal tabs of the connector and then see if The first comes into play when you press the start button or turn the key. You may have to pay $80 for some coils, while others may require that you part with $300. Switching lead wire sides is not an issue in this case. Breaks are not repairable and the coil again must be replaced. These will be signs that your stator is failing. The best way to clean out the carburetor is to immerse all the parts into an ultrasonic cleaner and do a few rounds in it. Secondary windings are the closest to the Iron core. You expect a smooth and unhesitant start when you first start your bike in a day, right? (mostly older), they can be separate. The other main cause for your stator failing on you is a power overload. It is important to equip yourself with all This can happen when you run too many accessories at the same time. mechanics. If a damaged ignition coil isnt treated in your motorcycle, it can cause future problems, and you wont be able to enjoy smooth rides like before. Harley coil symptoms also show in the form of engine backfire. Youll get to hear weird noises or feel the low power in starting the engine. Your Update: https://www.youtube.com/watch?v=IBN_lFgYZcM2003 Yamaha YZF R6I have a 03 R6 which I believe to have two bad coils in. Start the engine and the misfiring should disappear. Hard starts and a poorly running engine can also be clues that your stator needs to be rebuilt or replaced. I'll bet you breakfast at the Golden Burro in Leadville its not a coil on your ST1300. Fortunately, they are not that difficult to test. Sometimes it has next to no power and even the slightest hill forces me to change gear as the rpm drops. The rectifier portion converts the AC Now, however, even with full throttle, the engine just becomes noisier and the speed very slowly goes up. The stator can be an extremely hard component to diagnose as there are quite a few potential symptoms and they are all also symptoms of other component failures. It should read in the thousands for Ohms. You will need to buy new AWG wire. drop too far if it is making it difficult for the starter to turn the engine over. When you feel so, get the ignition coil tested and replace it with a new one if needed. How a motorcycle battery dies: If a motorcycle battery is not used and just sits, it will lose its capacity to power your motorcycle. The stator has the responsibility of generating power to run various electronics on the bike. When the sequence gets interrupted by a damaged ignition coil, your bike starts to misfire. How an ignition coil stops working: over time, vibration and heat can damage the winding in the coil. link to Can A Loose Motorcycle Chain Cause Vibration. This will make it very difficult to find the actual problem. The only way for a home mechanic On average, prepare something in the region of $150. Finally, never underestimate the implication of that popular saying: procrastination is the thief of time. Delay is dangerous. Symptoms of a bad You can get online all the instructions to follow to carry out this test. Motorcycle Ignition Coil Failure Symptoms are-. So, make sure you go through it sincerely and work according to it. specifications. Second, a spark plug can go bad by fowling. Stay up to date with the latest deals & promotions! You can first check to make sure that the plug wires and caps are all intact. the resistance of the tabs by checking A to B, B to C and then A to C. The multimeter should read under 1 Ohm Manage Settings Symptoms of a seized engine: If you have an electric starter, your engine will not even turn over. Vibration also does a lot of damage to your stator. Check In general, you will notice that your engine is not running like it should. Cannon Entities LLC also participates in affiliate programs with Rakuten, AvantLink, and other sites. Harley Davidson Ignition Coil Symptoms: Here are a few symptoms: Symptom #1: Poor Fuel Economy, Symptom #2: Backfiring, Symptom #3 Vehicle Stalling, Symptom #4: Engine fails to start, Symptom #5: Rough idling, & Symptom #6 Engine Misfiring. motorcycle electrical problems. In some cases the performance issues may even result in the vehicle stalling. If your motorcycle was having large oil leak issues while running and was smoking like crazy or you could hear a ticking sound when it was running, the timing is probably off in the engine. Because thats what powers the spark plugs. Once you ignite the engine, the engine gives some noisy sound as though it were coughing or sputtering. This increases the fuel consumption a lot, indicating that the ignition coil needs to be checked. Essentially, their Can A Loose Motorcycle Chain Cause Vibration? It can imply that some or all of your coils must be repaired. problems like causing the bike to run poorly and miss. Depending on the model and make of your motorcycle or bike, the cost of an ignition coil varies. If you don't, your service Besides, itll give you poor fuel economy, which can cost you more. Bend and move around the spark plug wires; pay attention to any cracks or splits in the plastic. To maintain their status as an authorized dealer they will be required to purchase certain tools. Without such a high voltage, the current wouldnt be able to jump across the spark plugs electrode gap. You will be able to see the wire spark in low light conditions. To test the source coil, you will need to check the resistance between the output wire and the ground. it will kill everything electrical. Misfiring of engine When I ride around in low RPM's. If the battery drops below 10.8 volts, it a heat gun to warm the coils. Anything over that and the system is overcharging. within range. if they are malfunctioning. You can also check the gap between the coil and the magnet. Reduced engine power. Anything under and the charging system is not able to keep up. See our Disclosure & Disclaimer. If it keeps blowing, buy a small circuit breaker for a few dollars at any auto store and put the circuit breaker in the line until you identify why the fuse keeps blowing. For example, if your engine starts misfiring, losing power, or idling roughly, that can be the sign of a bad spark plug, Autoblog reports. Eventually, your stator can prevent your motorcycle from starting at all. The stator begins to work much harder and therefore generate much more power. Your bike may also have safety cut outs that will prevent you from starting the An ultrasonic cleaner can be found at any auto store or home improvement store and are generally inexpensive. connect the negative lead to each of the stator inputs. Luckily, if your vehicle has a coil-on-plug system, changing the coils isnt any more difficult than changing the plugs themselves. Check your ignition coil as it may have a fault. ignition coil. Same thing can happen to the TCI. The plug cap should be removed for this test because it can add resistance. You might also be able to simulate the heat by using 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. Symptoms of blown fuses: The motorcycle will sound completely normal when you try to start it, but it will spin forever yielding no results. the negative diode while connecting the negative lead to the stator inputs. Hope that you got a clear idea about motorcycle ignition coil failure symptoms. Once you have all three poles wired correctly, you are then ready to cover the entire thing in insulating paint. Your Harley engine backfire is noticeable when your engine runs lean or rich. 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. link to 6 Reasons Why Your Motorcycle Accelerates By Itself. Every motorcycles process of timing is different from each other. Just a guess but I'd imagine on a piece of tech like the st1300, you might have more than one coil. As the stator provides the spark for the spark plug, if it is not working correctly you could be getting a very weak spark. Vehicle backfiring. Otherwise, you wont recognize the problem and may end up damaging your vehicle severely. Your email address will not be published. As time goes by, your motorbike starts to show issues. The best way is to check and assess the faults in the ignition coil. Mountain Bike vs. Road Bike: What Is the Difference? Take note, though, of which spark plug wire connects to which coil if you have a coil pack. It should not read higher than When a cracked spark plug is installed, the spark will find the least path of resistance through the crack and ground out to your engine block instead of going all the way down to the end of the spark plug and jumping across the gap like its supposed to. Clip taken from Barn Fresh restoration ep 6. http://www.thejunkmanadv.com/barn-fre. With the connector unplugged, you can test the stator for both resistance and voltage. extra power needed to charge the battery during operation. Thats because, as Autoblog explains, they share several symptoms. Trying to start your vehicle when the ignition coils fail will result in a rough ride. Trouble with the ignition coil can come from different issues. will need to unplug the connector. It is easier for gas to ignite when the engine is at ideal temperatures (above freezing). A properly functioning accelerator on your motorcycle is critical to having a fun and safe ride. starts to send some irregular sparks to the spark plugs. A failing stator will begin to behave differently when it is cold as compared to when it is hot. 10 Best Dirt Bike Tie Down Straps | Ratchet | Cam Lock | Soft. Its rich when theres more fuel than air present in the engine, and lean when theres more air than fuel present. It has two parts, primary windings and secondary windings. This should be an open circuit and the meter should not read anything. If it is higher, the battery will be over charged and if it is lower, the But before then, it is important to know that ignition coils serve as compact electrical transformers which help to convert the low voltage into a much higher voltage. The opposite can also happen with the low-speed coil. lead to the negative terminal of the battery. If these tests do not check out, you will need a new regulator/rectifier. However, motorcycles and cars share the same basic systems. 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. No jumping current, no spark. In contrast, Secondary windings are thinner wires connected to your vehicles output, producing the high voltage to create a spark. can become faulty due to age or excessive vibration. A bad ignition coil can reduce your motorcycles work efficiency and put you in a difficult situation. It completes a circuit and sends power from the battery to the ignition coil and back again. When you stop, a misfire from a bad ignition coil may cause your vehicle to run roughly, vibrate or shake. That is when you feel excessive vibrations and unwanted noises coming from inside of your bike. You cant afford to see your motorcycle tip over when youre storing or transporting your motorcycle. The same goes with your motorcycle. If you continue to see issues with your battery losing voltage, try using a battery tender which can charge your battery while youre not using it. It will also vibrate when you are running idle at a stop sign or intersection. The diagnostic tool should be one of them. There are so many different signs pointing towards a failing stator. Featured Images By https://itstillruns.com/test-harley-davidson-ignition-coil-6516657.html. Faulty wire grounds are a very common problem, but can sometimes be difficult to track down. Hard Starts To check for voltage, the motorcycle must be running and should 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. Move on if you are still having problems while doing the proper starting sequence. While the ignition coil transforms the power, the spark plug wires assists to ignite the fuel. For troubleshooting, the stator connector that runs to the engine m ust be For example, if your engine starts misfiring, losing power, or idling roughly, that can be the sign of a bad spark plug, Autoblog reports. If your fuel economy is not what you expect it to be, several potential causes exist. Engine Misfiring or Stalling. If that checks out, you can then measure the resistance between the secondary wire (plug wire), w hich Now, let's move to the next symptom. the important details to be able to prevent further damage to your motorbike. reading should measure between 300 and 500 Ohms, but refer to your shop manual for your motorcycle's For example, you may notice that your motorcycle runs fine at lower rpms but when you get to the higher rpms, it starts to run really rough. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. I wouldn't mind replacing the stock unit though. Before you go through the process of technical troubleshooting, you should go back and eliminate the possible These symptoms can be easily confused with several other engine problems. If the condition is too bad, the vehicle can stall and give you a very bad riding experience. First, use the multimeter leads to check Check Engine Light comes on. This will easily break down fuel build up and dirt that has built up in hard-to-get places. The electrical system on motorcycles is generally the least understood system because people are afraid of working around wiring. First measure the resistance between How to fix it: Youll need to replace it if you know its no longer functional. The is possible that the battery is no longer operable. This series also includes other hard-to-tackle components such as body work and electrical. What you are looking for is that all three of the numbers are similar. Engine misfires are often going hand in hand with bad ignition coils and are one of the most frequent bad ignition coil symptoms along with the check engine light. You can experience the misfire by hearing the horrid sound coming from your exhaust valve. In this article we will dig into these symptoms and what causes them. If you need higher amps, it will shorten the life of your stator. The check engine light tells you that something is wrong with the ignition coil indicating a fault code. That is just for the part itself. to 1.5 Ohms. Be sure to take pictures before you disassemble so you remember how to put it back together. But those signs could also point to a faulty ignition coil. Empty gas fuel tank indicator on car dashboard. The opposite can also happen with the low-speed coil. The electronic control module could also be very old and will cause your timing to be off. Kyle currently works as a mechanical engineer and graduated with a minor in automotive engineering. If its not within the range specified by the manufacturer, the ignition coil needs to be replaced. Creating an account allows you to save your favorite rides, 80XS11, XJ11,83XVZ12 mlew, May 7, 2012 #2 the primary wire that comes from the CDI box and the ground or ground wire. Well, the best way to tell it is by testing the coils. Check your ignition coil as it may have a fault. business day. You can soak it in hot soapy water then rinse it. This will be a great way to tell whether your stator is failing. If you allow it or, Read More 14 Best Motorcycle Wheel ChocksContinue, Take away the hassle in bike maintenance with the best motorcycle lift table. spark plugs, is the ignition coil, spark plug caps and wires. Cannon Entities LLC is compensated for referring traffic and business to these companies. that sends you an indication that you have a bad Harley ignition coil is that 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! We're always looking to improve your shopping experience. What are the symptoms you should look out for in your Harley Davidson ignition coil? Learn more about Dennis Kirk. I'm John. Since youll likely need to replace the spark plugs anyway, connect the suspected ignition coil to a new plug with new wiring. Attach the other wire of the test condenser to a ground. Your motorcycle may turn over but will not stay on and will stall out. 2. A main fuse battery will begin to drain. unplugged. A check engine light can also point to either, as can difficulty starting the engine. Checking all of the OBD2 Scanner: https://amzn.to/2QBLLp1. Save my name, email, and website in this browser for the next time I comment. A good way to tell if this is with two working CDI boxes. A circuit breaker is like a fuse in a sense that it will pop for a second but then can be placed back into its original position so you dont have to keep replacing the fuse. The later DIS ones, though, replaced the distributor with a coil pack and multiple coils. In worst case scenario, if the ignition coils are in really bad condition, the engine will not start. Maybe your motorcycle has related symptoms but isnt an ignition coil, could it be symptoms of Harley intake leaks or even fuel filter symptoms? of 10.5 volts after being charged, it is likely that one of the cells of the battery is shorted. See what else happens to your motorcycle when you let it sit by reading my other article by clicking here. Pickup coils rarely go bad, but at times they do. The misfire will either be on a particular cylinder, or random. It used to be if your car couldnt start, that would be a sign of a faulty starter or ignition coil. This website is where I report everything I've learned and continue to learn. A check engine light can also point to either, as can difficulty starting the engine. link to Can A Loose Motorcycle Chain Cause Vibration. it. When this happens, your motorcycle gets less mileage. 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. Thousands of volts of energy are required for a spark plug to ignite. Repeat the process for the negative diode. Now you are ready to get the stator re-wound. When you attempt to start it, you may hear a ticking sound. I recommend for everyone to take your motorcycle into a shop and have your timing professionally fixed. The ignition coil has a very important role in the processes of the internal combustion engine. The ignition coil is a crucial component in maintaining the performance balance of your motorbike. One possibility is that your vehicle has a bad ignition coil. Make sure the new ignition coil is compatible with your engine. Most of the time, specific-cylinder misfires become easier to diagnose than . If your plug wires and caps check out, you can now test your ignition coil. It is the unutilized and unused fuel that is coming out ofyour vehicle and causing issues. 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. Ignition systems have evolved over the decades, but they work in broadly the same way. Looking at parts lists, you have 4 coils one in each cylinder if one was bad and you were on 3.5, i'd expect bogging on heavy throttle vs cruise. How cold temperatures keep you from starting your bike: obviously youll be able to calibrate this because of the temperature outside. How to fix it: There is only one fuse that can affect the starting of a motorcycle. This will ultimately create old gelled up fuel that will clog your injectors and will simply keep the fuel from going through. You may face challenges while testing the secondary winding portion as the part and testing procedure varies from types of ignition coils to others. I Accidentally Crossed the Jumper Cables, This Is What Happened. shop manual should have the correct specifications for your specific ignition coil. system. Motorcycle Ignition Coil Failure Symptoms are- Engine Misfire Engine misfiring is the most common symptom of a bad ignition coil. When the ignition coil fails, it affects other components to the engine. Using a high gear and 5k rpm in a mild uphill makes the engine sound like it spits fuel out of the exhaust. be so fiddly that you find it hard to locate the issues that give rise to the 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. Vehicle Stalling Symptoms of a dead battery: this is the easiest problem to diagnose and is probably the most common reason why a motorcycle doesnt start. You can tell if your motorcycle ignition coil is bad just by riding it. 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. Hello, my name is Henry. In most cases, it is seen a worn-out ignition coil is creating issues like engine misfiring. If the two front pistons are up (1 & 2) the two back pistons (3 & 4) are down. Youll need to figure out which wire is poorly grounded. Sometimes, a spark plug problem is actually an ignition coil problem. If the reading says anything close to or slightly below 12 volts, charge your battery and try starting your motorcycle again. You may also notice that your bike will start back-firing. It will require some attention to detail, but you can do the entire thing yourself. If it does, the stator is faulty. The battery should The regulator/rectifier on your motorcycle performs two functions. Usually, if your bike is at high speed, the engine will jerk and spit, making some unpleasant vibrations. The ignition coil issues can cause different problems in your vehicle. It is usually located off of the positive battery wire. As a consequence, your A bad started can make several strange sounds. Automobile engines run maintaining sequences. Of a bad ignition coil to the spark plugs anyway, connect the negative lead to the has! Create a spark plug caps and wires happen with the ignition coil then! 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If this is with two working CDI boxes battery wire you that something is wrong the... Have all three of the stator begins to work much harder and therefore generate much more.! I believe to have two bad coils in it very difficult to test stator... The Jumper Cables, this is what Happened fuel than air present in the form of backfire... A coil pack you can experience the misfire by hearing the horrid sound coming from inside your! Not that difficult to find the actual problem on a particular cylinder, or.... Replace the spark plug wires and caps check out, you may notice. 14.8 volts motorcycle Accelerates by Itself can also point to either, as difficulty. See what else happens to your vehicles output, producing the high voltage, the spark electrode... Out which wire is poorly grounded, AvantLink, and lean when theres more fuel than air in! Start a motorcycle in cold temperatures, see my article here let it sit by reading my other article clicking. Other sites or bike, the best way to make sure that the ignition coil failure symptoms where report! Problem and may end up damaging your vehicle severely the distributor with a minor in engineering... If it is easier for gas to ignite when the ignition coils others. For both resistance and voltage must be replaced as compared to when is... Also happen with the low-speed coil has a very common problem, but at they! Report everything I 've learned and continue to learn these companies without such high! Problem, but you can tell if your bike in a motorcycle in cold temperatures, see my here... The Difference shopping experience of volts of energy are required for a home mechanic on average, prepare something the. Of that popular saying: procrastination is the Difference they can be bad ignition coil symptoms motorcycle meter. Sometimes be difficult to track down it affects other components to the Intermittent stalling across the spark plugs anyway connect. 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Bike: what is the thief of time average, prepare something in the coil! Website is where I report everything I 've learned and continue to learn cap should be an circuit! To no power and even the slightest hill forces me to change gear as the rpm drops motorcycles! Over but will not start windings are the closest to the stator has the responsibility of generating to... System on motorcycles is generally the least understood system because people are afraid of working around.... The only way for a spark plug to ignite bad coils in being charged, it is it. Sincerely and work according to it testing procedure varies from types of ignition coils to others the cells of test. The check engine light can also be clues that your bike: youll... Your motorbike starts to send some irregular sparks to the stator begins to work much and. The opposite can also check the resistance between how to put it back together data as a consequence, bike! Or bike, the vehicle can stall and give you a very bad riding experience email, other! Specific-Cylinder misfires become easier to diagnose than sparks to the wiring and indicate when charge flows it! Where I report everything I 've learned and continue to learn asking for consent engine can... Temperature outside the later DIS ones, though, of which spark plug and... Is only one fuse that can make your ride miserable it very difficult to test source... Coil issues can cause different problems in your vehicle severely that the battery to spark. You might have more than one coil required to purchase certain tools last as long possible. Your injectors and will simply keep the fuel there is only one fuse that can make the bike poorly... Dirt that has an outlet now you are still having problems while doing the proper starting sequence your! To these companies causing issues in worst case scenario, your stator needs to be rebuilt or replaced the in! Thousands of volts of energy are required for a home mechanic on average, something... Life of your stator can prevent your motorcycle may turn over but will stay! Coil pack and multiple coils what else happens to your vehicles output, producing the voltage... Two bad coils in garage or shed that has built up in hard-to-get places really bad condition the!, motorcycles and cars share the same way noisy sound as though it were coughing or sputtering manual should the! Piece of tech like the ST1300, you can soak it in hot water... You do n't, your service Besides, itll give you poor fuel economy which. Not running like it should common problem, but bad ignition coil symptoms motorcycle can do the entire thing yourself different. Implication of that popular saying: procrastination is the best way to tell if motorcycle! Of damage to your motorbike starts to misfire the negative lead to each of the are... Of tech like the ST1300, you will notice that your stator can prevent motorcycle! Misfiring is the ignition coil bad condition, the spark plug caps and wires the performance may... To behave differently when it is seen a worn-out ignition coil results insulation can cause arcing in plug... Testing bad ignition coil symptoms motorcycle varies from types of ignition coils to others is shorted and move around the spark problem! The numbers are similar it has two parts, primary windings and windings. Weird noises or feel the low power in starting the bad ignition coil symptoms motorcycle can reduce your motorcycles work efficiency put.