The voltage from a battery is only 12 volts. Testing an ignition coil simply involves removing it from its place on the engine valve cover and attaching a spark tester to it. Accurately determine the breakdown of the ignition system of the chainsaw will help a special device. Disconnect the small grounding wire, attached to the side of the coil, with a wrench. Touch the second probe of the meter to the ignition coil's grounding terminal. What will make this possible is if you use a wire-piercing probe to attach to your multimeter leads. An OBDII scanner with mode 6 capability (non continuous monitors) is the best tool to test vehicles 1996 and newer. If it does not, the coil's primary winding is faulty. We’ll … If it does not, the coil's secondary winding is faulty. Test the ignition coil using a multimeter: The ignition coil’s testing method is straightforward. Although manufactured to last, ignition coils are not fail-safe. You can also test an ignition coil with a spark tester. Remove the flywheel using a wrench and then inspect the coils. An oscilloscope is the best tool to test the ignition coils while they are outside of the vehicle, but this is not a tool that the average american will make use of often, and they can be pricey. Before you begin, make sure to put on safety goggles, that you are not wearing any loose clothing, and that your hair, if long, is neatly tied back. Video: How to Test a Chainsaw Ignition Coil with a Multimeter Husqvarna ignition module with high voltage wire On-off wires (breaker) and a cable (armored wire) are mounted from the module (coil), mounted in the cap, where the glow plug is inserted. If the spark tester sparks, then you can conclude that the ignition coil is OK (not … Attach both leads of the meter to the coil-terminals with black to the negative terminal and red to the positive one. This means the if the coil is cold, An oscilloscope is the best tool to test the ignition coils while they are outside of the vehicle, but this is not a tool that the average american will make use of often, and they can be pricey. An ignition coil is a kind of high-voltage transformer. Though its precise location may vary from vehicle to vehicle, generally, it is located near the fender or bolte… The meter should read 6,000 to 15,000 ohms. These mode 6 scanners usually start at around $100, and they can be used on all of the vehicles you own. You must have JavaScript enabled in your browser to utilize the functionality of this website. Move one of the test leads from the side terminal to the high-tension terminal in … This way you don't risk damaging the COP ignition coils … Other times, they may develop a hairline crack that is internal only, and not visible from the exterior. The ignition coils are situated on top of the engine beside the flywheel with two ends touching the flywheel rim. To test the coil's secondary winding, attach the test probes to the outer 12-volt pole on the coil and the center pole (where the main wire goes to the distributor). Also, the engine of a car produces electricity, so you will want to take utmost precaution to prevent any … As the coils age, this resin may crack. If there is an ignition coil that is occasionally misfiring, testing the resistance with a multimeter does no good. Therefore, in this article, we shall be focusing on how to check a coil … Use your multimeter to check for resistance. It is however not the safest or most convenient way. All of the circuits can be tested without having to unplug the Coil-On-Plug ignition coil. In many instances, you may not see the sparks because they are small. An OBDII scanner. Turn the reading dial on the multimeter to ohms to measure resistance of the primary pickup coil. Find your multimeter and set it to measure resistance (ohms). The normal, acceptable range for a standard 12-volt car is 1.5 … The ignition coil consists of a single wire wound hundreds of times around a core, and any break that occurs in the wire renders the coil inoperable. It will make it possible to determine if there are breakdowns of the coil and other elements of the assembly. … The two ignition coils’ circuits need checking. Connect your multimeter to the positive terminal or pin of your coil, and to the high output terminal that goes to the spark plug. If the ignition coil on your chainsaw fails, it will prevent the saw from starting because it does not allow the spark plug to operate. Other times, they may develop a hairline crack that is internal only, and not visible from the exterior. One of the coil’s terminals should be shown leading to the spark plug. Holding the spark plug against the chassis is perhaps the easiest way to test the ignition coil in a leaf blower. If you're lucky, you might see the crack from the exterior of the coil, making it easy to determine that it needs to be replaced. Most people think you can check a small engine’s ignition system by removing the spark plug and grounding it while cranking the engine and watching for a spark. A safer way to test the ignition coil. If you're lucky, you might see the crack from the exterior of the coil, making it easy to determine that it needs to be replaced. An oscilloscope is the best tool to test the ignition coils while they are outside of the vehicle, but this is not a tool that the average american will make use of often, and they can be pricey. Modern ignition coils typically have an epoxy resin that surrounds the actual coil windings. Locate the ignition coil, or coils, on your vehicle. (The Greek letter omega denotes ohms.) Set the multimeter to the "continuity" setting and insert one probe into each end of the wire. How to check the ignition coil of a chainsaw with a multimeter? The resistance should measure around … You can test a 12-volt ignition coil for effectiveness by checking the resistance of its wire windings with a multimeter. Even if you find a bad coil, simply replacing it is not the whole repair, because like so many other parts of a vehicle, COP ignition coils don’t really die, they’re murdered. Note: If all of the ignition coils aren’t delivering spark, the issue is likely with the control side (primary side) of the ignition system, rather than a single ignition coil. Step 1: Prepare the multimeter. The 12-volt pole is the spot where the power comes into your coil. This is a great method to test out your own personal vehicle, or even a vehicle you are looking to purchase. Insert one of the multimeter's probes into the center opening of the coil, contacting the metal terminal inside the coil. To test the cap, you will need to remove it. 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