At idle I am getting a knocking noise from the smog pump next to the alternetor. At a high idle it disappears. does this mean the unit is on its way out. thanks

Asked by Feb 18, 2007 at 01:07 AM about the 1987 Chevrolet Corvette

Question type: Maintenance & Repair

1 Answer

17,435

Hello, I'm not sure if it means the unit is on its way out, but knocking in an engine is never a good thing. I would visit a mechanic as soon as you can so that you do not risk doing damage to your engine. Best of luck! CarGrrl

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