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How your car’s coil packs cause sudden misfires

Sudden misfires feel like the engine just lost its rhythm, yet the real drama often starts inside a failing coil pack. When ignition coils break down under heat, vibration, or age, they can turn a ...
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Buddy's DIY on MSNOpinion

How to test spark plugs and/or coils on any car (including recessed spark plugs)

How To Test Spark Plugs Effectively ...