emission check valve question
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Joined: May 2005
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From: crofton maryland
emission check valve question
what are signs the check valves that are on my 86 vette factory emission exhaust are bad??
i am asking since after my vette has sat a day or more at start ups it seems like the exhaust system under the hood is building up some kind of pressure and then it get quiet? are they all like this or is something not working right? i know there alot of stuff to this system, smog pump, air verter, check valves on boths side just to name some of it.
i am asking since after my vette has sat a day or more at start ups it seems like the exhaust system under the hood is building up some kind of pressure and then it get quiet? are they all like this or is something not working right? i know there alot of stuff to this system, smog pump, air verter, check valves on boths side just to name some of it.
