09-14-2020, 04:29 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
That's interesting. I'm assuming you have a regular old-style PCV valve stuck in the passenger side valve cover and not a fancy adjustable PCV valve. Here's a test: If you pull the hose off the PCV valve entirely, so that the hose is just sucking plain old air from the atmosphere, does your idle shoot up higher?
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