Question about 1995 Pontiac Grand Am
Bought a 1995 Grand Am and replaced the cylinder head, spark plugs, coil pack, etc. Spark is good and plugs are top of the line. Machined and put together the cylinder head myself (that's what I do for a living). Car starts fine but idles rough. There is NO miss. Will drive normal but shakes and runs rough when idling, but runs like a champ when you drive. Please help me.
Sound very much like you have an air leak problem and even a seal problem to on the intake manifold and injector seals may be leaking same happend to me on my car and i found i had to strip it all again to sort it out .
the injector seals if they are not sitting right or just a slight spec of dirt there you have a problem.
air leaks to see if you do have one use wd40 can spray on the manifold and if the engine picks up you have a leak ok
i hope this helps
let me know how you go on thanks
Posted on Jan 18, 2009
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Posted on Jan 02, 2017
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