WHAT IS THE CAUSE?
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1993 Chevrolet Camaro Question: HAS HIGH IDLE & MISFIRE
Answer #1Russ May 15, 2009, 12:04Master
An engine vacuum leak affecting only one cylinder could cause and engine misfire and high idle condition. I would recommend to find the cause of the engine misfire and get that repaired. Once then engine is running smoothly then recheck the idle and repair as necessary.