Question about Pontiac Grand Am
Knocking in an engine is never a good thing. I'd check three things: engine bearings, valve lifters and timing chain, all of which can make noise. First thing though, is to put a mechanical gauge in place of the sending unit and check actual engine oil pressure. this will give you a good idea what is going on. low readings can be bearings, normal readings can be the other two items. I could give you a definite idea by listening, but I really can't hear it from here.!(one of the frustrating drawbacks to doing this online) An experienced tech can listen and tell you pretty much what's going on.
Posted on Apr 18, 2009
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Posted on Jan 02, 2017
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