SYMPTOMS OF BAD SPARK PLUGS Changed spark plugs and found hair line crack in ignition coil. Been trying to track down the source of my engine shaking and running rough, could this be the cause? : r MechanicAdvice 7 Reasons Your Car Shakes When Check Engine Light Flashes Due to Misfire (Don't Ignore!) Symptoms of a Bad Spark Plug
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can spark plugs cause vibration Why does your car feel fine at high RPM but weak down low? 🤨 Worn spark plugs can cause delayed combustion, vibration at idle, poor cold starts, and engine warning lights