Corrosion at the connector, often appearing as a white or greenish powder, disrupts the signal and mimics a faulty coil. Visible physical damage, such as cracks, corrosion, or excessive carbon buildup on the coil casing.
Step-by-Step Harley Davidson Coil Pack Diagnosis and Testing
Refer to your specific Harley model's service manual for the exact resistance specifications, as these vary significantly between years and engine types. This small, cylindrical component is responsible for converting the battery's low voltage into the thousands of volts needed to create a spark at the spark plugs.
A noticeable loss of power, acceleration, or fuel efficiency. Carefully locate the ignition coil, which is typically mounted near the rear of the engine or under the seat on older models.
Diagnosing Harley Davidson Coil Pack Failure Symptoms and Tests
5 ohms, while the secondary winding shows a much higher resistance, generally between 6,000 and 18,000 ohms. Examine the unit for any cracks in the plastic housing, as these allow moisture to enter and destroy the internal windings.
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