Stupid Question..... - ZR-1 Net Registry Forums

jrd1990zr1 · 05-05-2011

Tom,

Before you pull the plenum or the engine gets warm, check to make sure the vacuum line to the MAP sensor is still hooked up to the back of the plenum. Just a thought. Also make sure the PCV valves are seated and there are no leaks. I have quite a hissing sound on mine as the air flows through the PCV system. Again just a thought. Did you change out the PCV valves and possibly get a bad valve?

Don't forget I still have those 4-917 PCV valves for you!

John

05-05-2011	#11
jrd1990zr1 Join Date: Dec 2005 Location: Delanson, NY Posts: 916	Re: Stupid Question..... Tom, Before you pull the plenum or the engine gets warm, check to make sure the vacuum line to the MAP sensor is still hooked up to the back of the plenum. Just a thought. Also make sure the PCV valves are seated and there are no leaks. I have quite a hissing sound on mine as the air flows through the PCV system. Again just a thought. Did you change out the PCV valves and possibly get a bad valve? Don't forget I still have those 4-917 PCV valves for you! John __________________ 1968 convertible Lemans Blue, 1986 coupe Medium Blue NCRS Top Flight (sold), 1990 ZR1 #2529 Red NCRS Regional and National Top Flight (sold), 1990 ZR1 #2124 Charcoal Metallic NCRS Top Flight 2010 & 2018, 2003 Anniversary Red Convertible (sold)