Testing your ignition coil can help you diagnose any issues and keep your engine running smoothly.įirst, remove the spark plug wire from the spark plug and use a spark plug socket to remove the spark plug. A faulty ignition coil can lead to engine misfires, hard starting, and poor performance. The ignition coil is responsible for creating the spark that ignites the fuel in your engine. To keep your small engine or 2-stroke engine running smoothly, regularly check the ignition coil. However, like any other electrical component, ignition coils can fail over time due to wear and tear, overheating, or other factors.īy regularly testing your ignition coil’s resistance, you can catch issues early and prevent costly repairs down the line. The ignition coil is a crucial component of the ignition system that generates the high voltage needed to ignite the fuel in the combustion chamber. Insufficient resistance can damage other components in your small engine, so it’s important to always check the compatibility of your coil with your specific type of equipment. Note that while a low resistance reading may seem like a good thing, it can actually be a sign of a problem. Make sure you connect the right lead to each section, as shown by the + and – in the top left corner of this ignition coil resistance chart.
Small Engine Ignition Coil Resistance Chart If your positive multimeter lead is touching point B, as pictured on this chart, you will get a reading to points A and C. If your negative lead is attached to point B of your coil, as seen on this chart, your multimeter should give an infinite reading to both points A and C. Ignition Coil Resistance Chart – InstructionsĬurrent flow through point B of the coil on the resistance chart is directional. You’ll find the chart and comprehensive testing instructions below this helpful coil ohm testing video. Required tools are a multimeter and this ignition coil resistance chart.Ī small engine ignition coil resistance chart provides information about the acceptable range of resistance values for the ignition coil in a small engine.
Testing ignition coil resistance is a simple process that can help you diagnose any issues and get your equipment up and running again. One of the most common culprits of small engine failure is a faulty ignition coil. If you’re someone who owns a small engine-powered lawn mower, chainsaw, or leaf blower, you know how frustrating it can be when your equipment won’t start.
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