Johnson Evinrude Outboards: Ignition Coil Troubleshooting Help
Johnson Evinrude Forum Topic: Ignition Coils
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Johnson Evinrude Forum Topics
Ignition Coil for Johnson Evinrude Outboard
Outboard ignition coils, sometimes called coil packs, supply the high voltage required to fire spark plugs. When low spark is detected on a plug, it might be time to replace a coil. Plastic covered coils can develop cracks in the casing or cracks can develop in wire coverings which lets the current leak or arc out to the engine block. Multi-cylinder engines typically have one coil per cylinder, but some designs have one coil that fires two adjacent cylinders.