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I been chasing a ruff idle issues for a while now after the motor rebuild I fixed all the air leaks, changed the Egr valve out and the ruff idel still was there.
Tryed all kinds of timming setting but still ruff idel.
I found it it was a bad Air Control Valve (ACV) a $39.00 part.
I set base time check timming it runs great now it about time.
Almost I driving the car down in the morning to get the new front Y pipe and Main cat so I can hook the Long tube headers to the mufflers I like the way it sounds Uncorked but the cops do also.
I should be able to start Monday make My vette a daliy driver unless it bad weather then I drive my truck to work.