oliverd642
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HI! Olds 307 (from a 1990 caprice wagon)
There is an intermittent tapping/knocking sound coming from the engine, mostly at idle speed to around 1500rpm, anything after that it goes away and comes back as the revs drop. Weird thing is, it doesnt do it all the time! sometimes its nice and quiet! I only usually hear it when the engine is warm. I am yet to hear it on a cold start.
When it makes the sound, the engine kinda shakes at the same time, light a slight misfire.
Link to the sound:
Edit: I’ve just noticed, it’s not only when the engine is warm, sometimes it will make the sound when cold too.
Any ideas what it could be?
There is an intermittent tapping/knocking sound coming from the engine, mostly at idle speed to around 1500rpm, anything after that it goes away and comes back as the revs drop. Weird thing is, it doesnt do it all the time! sometimes its nice and quiet! I only usually hear it when the engine is warm. I am yet to hear it on a cold start.
When it makes the sound, the engine kinda shakes at the same time, light a slight misfire.
Link to the sound:
Edit: I’ve just noticed, it’s not only when the engine is warm, sometimes it will make the sound when cold too.
Any ideas what it could be?
Last edited: