This surge is directed to the correct spark plug at the exact moment dictated by the engine's timing. Over time, the harsh environment under the saddle exposes the coil to heat, vibration, and moisture, which can cause external damage.
How to Perform an Ignition Coil Swap Test on Harley Davidson Bikes
5 ohms, while the secondary winding shows a much higher resistance, generally between 6,000 and 18,000 ohms. Engine misfires or rough idling, particularly noticeable at low RPMs.
Common Symptoms of a Failing Coil Identifying a faulty ignition coil early can save you from more extensive repairs down the line. Refer to your specific Harley model's service manual for the exact resistance specifications, as these vary significantly between years and engine types.
How to Perform an Ignition Coil Swap Test on Harley Davidson Bikes
Ground the spark plug by holding the metal threads against the engine block or a piece of bare metal. Owners often notice specific warning signs that point directly to the coil.
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