When this happens, your Next, take the multimeter and place it in the ohms position. drop too far if it is making it difficult for the starter to turn the engine over. If it starts and revs up for a few seconds then that means your have a dirty carburetor. To check for voltage, the motorcycle must be running and should Generally, our first thought is to assume that those other components have failed, and we do not consider the stator. Featured Images By https://itstillruns.com/test-harley-davidson-ignition-coil-6516657.html. troubleshooting to eliminate them as the source of the problem. 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. 6 Reasons Why Your Motorcycle Accelerates By Itself. Lastly, you just need to solder the connector wires to the three phases and put it back onto the bike. Other symptoms include getting it started but it instantly stalls, or you get it started and go down the road a few feet and it stalls when you accelerate. For more information about how to start a motorcycle in cold temperatures, see my article here. Before you go through the process of technical troubleshooting, you should go back and eliminate the possible 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. However, its possible for bad coils to still pass this test. Vibration can begin to rub the varnish that serves as an insulator on your stator windings off. Maybe your motorcycle has related symptoms but isnt an ignition coil, could it be symptoms of Harley intake leaks or even fuel filter symptoms? Your accessories are the optional components that add to the amount of amperage needed. plug cap. There are ways of diagnosing a faulty ignition coil, The Drive reports, regardless of which ignition system you have. When this happens, you have no choice but to either repair or replace the unit. Try to disconnect the cable that leads to the bad coil. Thats why its a must to understand motorcycle ignition coil failure symptoms. Excess power is converted into heat by And when you get to a stop sign, the engine may fail to start, or its idling. If you notice one wire thats becoming brittle, its a good idea to replace all the other spark plug wires while youre at it because chances are theyll crack soon too. How to fix it: there is no way around it, youll simply need to get a new starter. car may completely stop working or fail to restart after shutting up. For troubleshooting, the stator connector that runs to the engine m ust be The gasoline doesnt entirely evaporate when it is mixed with air during cold temperatures and therefore combustion doesnt occur correctly. Next, check to make sure nothing is going to ground by connecting the red lead to the connector and the black You can also check the gap between the coil and the magnet. To test the cap, you will need to remove Further, it occurs when there is gasoline in your combustion engine cylinders and is referred to as backfiring. Copyright 2023 Dennis Kirk, Inc. - All Rights Reserved. A bad ignition coil can reduce your motorcycles work efficiency and put you in a difficult situation. Be sure to take pictures before you disassemble so you remember how to put it back together. What you are looking for is that all three of the numbers are similar. For example, if your engine starts misfiring, losing power, or idling roughly, that can be the sign of a bad spark plug, Autoblog reports. It's a good idea to keep a spare main fuse on hand at You need to make sure that your battery is in working condition. 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. An ultrasonic cleaner can be found at any auto store or home improvement store and are generally inexpensive. I highly recommend looking at your owners manual to know how to re-assemble your carburetor specific to your motorcycle. The same goes with your motorcycle. This is a result of the high-speed coil in the stator going bad. Youll need to plug in a space heater and blow it directly onto your engine and carburetor for at least 20 minutes. 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. Youll still get the correct reading. in your bike stalling while working. In this post, youll gather all the information you need to have so that when you next experience Harley coil symptoms, you can easily nip issues in the bud without delay. 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. Can you repair the stator yourself? I Accidentally Crossed the Jumper Cables, This Is What Happened. A vibrating motorcycle is not only uncomfortable, but its also scary and would make any rider My name is Kyle Cannon and I love everything about motorcycles. If it does, the stator is faulty. function. 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. You can save yourself quite a bit of money by repairing the stator. 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. How the carburetor gets dirty: Deposits and dirt can build up in your fuel system. How to fix it: put your motorcycle into neutral and try starting it again. The most obvious symptoms of a bad motorcycle stator include no spark, weak spark, or intermittent spark (also known as misfiring). But those signs could also point to a faulty ignition coil. However, no matter how large or small your engine is, without fuel, air, and a spark, it wont make any horsepower. Anything over that and the system is overcharging. 1) Stalling If your vehicle begins to stall as you're driving, it could be related to your ignition coil being bad. 2. Is Leatt Knee Brace a lightweight and comfortable? When the magnetic field gets cut off, it creates an electrical current between the inner and outer coils. Youll need to figure out which wire is poorly grounded. Significant engine trouble can also cause the voltage to This could be constant or completely irregular and sporadic. 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. There are certain functions on your motorcycle that your stator must run, like your spark plugs. Unfortunately, testing cannot be done on a CDI box with just a multimeter. 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. 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! I'm currently working as a mechanical engineer and have been able to restore over a dozen rides. Your stator will last quite a long time if you take proper care of it. Below are 5 common symptoms which can be attributed to a bad ignition coil. Manage Settings Usually, if your bike is at high speed, the engine will jerk and spit, making some unpleasant vibrations. setting your meter to Ohms. A breakdown in the These are parts that dont last forever and with continual use, theyll eventually become dysfunctional. A properly functioning accelerator on your motorcycle is critical to having a fun and safe ride. Pickup coils rarely go bad, but at times they do. ). If its too far or too close then it wont spark right. Set your multimeter to Ohms to check this. It will, The longer you have a motorcycle, the longer it is exposed to vibrations, heat, cold, wind, water, etc. Make sure that it is gapped to the But, a faulty ignition coil is enough to hurt your expectations. Also, plug wires can be checked for proper resistance using an ohmeter. 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. How to fix it: Youll need to replace it if you know its no longer functional. Currently I am riding kawasaki KX450F. It should not read higher than Not using a fuel filter will quickly cause a dirty carburetor. Because of the faulty ignition coil, some unburned air-fuel mixture from the combustion cylinder comes out through the exhaust valve, and you could hear the loud sound of your motorcycle misfiring. Make sure the new ignition coil is compatible with your engine. How to fix it: all you need to do is simply replace the spark plug wire. Secondary windings are the closest to the Iron core. If the reading says anything close to or slightly below 12 volts, charge your battery and try starting your motorcycle again. Your motorcycle will sound like its attempting to start, but the turning sounds will probably sound a little slower than normal. Anything under and the charging system is not able to keep up. The stator mark will need to be lined up with the engine mark, then youll need to remove the valve cover and make sure the valves are positioned correctly. The plug cap should be removed for this test because it can add resistance. This will help the stator to last a long time again. Strange Engine Noise. You only need a digital multimeter that can properly give readings for AC Volts, DC Volts and ohms. Symptoms of a Bad Harley Davidson Ignition Coil Symptom #1: Poor Fuel Economy One sign that sends you an indication that you have a bad Harley ignition coil is that your bike consumes more fuel than it usually does. If it still doesnt fire, its the coil. 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. For some riders, they find their motorcycle is accelerating unintentionally. Thousands of volts of energy are required for a spark plug to ignite. That causes a magnetic field to form in the ignition coil. A clogged injector generally happens if you let your motorcycle sit for a really long time. Engine Misfiring or Stalling. Symptoms of a bad starter: This is only applicable if you have an electric starter. Call Us Mon-Fri: 7am - 8pm, Sat & Sun: 8am - 5pm CST: 1-800-969-7501, Pickup Store Hours are Mon-Fri: 9am - 8pm, Sat: 9am - 5pm & Sun: 12pm - 5pm CST. manual should have all of the locations noted. manual's specs. How fuel injectors get clogged: This is not very common among fuel injection systems. Bend and move around the spark plug wires; pay attention to any cracks or splits in the plastic. 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. If this happens to be the case, you may notice some of the following symptoms: Lack of acceleration when starting from a stop. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. If you dont have access to your owners manual, check out emanualonline.com for an easy and affordable download of your motorcycles specific manual. Vehicle backfiring. Learn why Harley Davidson Motorcycles Backfire here. 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. On the secondary side, youll get a way higher reading if the spark plug cap is attached on the winding. Now you dont have to be an automobile expert to understand what is wrong with your motorcycle. How to fix it: There is only one fuse that can affect the starting of a motorcycle. But those signs could also point to a faulty ignition coil. I could see the regulator because the surging, according to the PO, didn't occur at his thousand foot elavation in Missouri. system. within range. all times because they can go at any time. theres a bad coil, we may be referring to low voltage. Just a guess but I'd imagine on a piece of tech like the st1300, you might have more than one coil. They can be expensive and if it was not the problem, you can be stuck The problem with that is most Honda dealers don't even know what a ST1300 is. The only way for a home mechanic See my article here for more details about what happens when a battery just sits. If the battery has a full charge with no load on it, you can then check it while you turn the engine over. I have used this method hundreds of times and it has worked great. But, the plug color was perfect and not indicating a lean condition. 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. 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. Required fields are marked *. This is a much harder thing to prevent though. (If your bike does not have a battery, you This post may contain affiliate links. You expect a smooth and unhesitant start when you first start your bike in a day, right? Your bike may also have safety cut outs that will prevent you from starting the When you feel so, get the ignition coil tested and replace it with a new one if needed. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. 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