Subject: Engine Tapping Noise. Could It Be Valve Lifters??
>From: snipped-for-privacy@posi-tech.com (Jeff Guyer)
>Date: 16/07/03 17:13 GMT Daylight Time
>Message-id:
>
>I have a 94 Grand Prix, 3.1L V6. Recently it has developed a tapping
>or rattling noise. Here some situations when it happens. With the
>car started and in Park, I can barely hear anything other that regular
>engine noise. With the car in Drive but not moving the noise is very >loud.
Then it isn't lifters. I see no way they can be affected by which gear you're in. A gearbox fault would be the logical deduction.
Dave Baker - Puma Race Engines