C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

P1416, lt4

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Old Mar 17, 2009 | 08:34 PM
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I removed the check valves. I think the passenger side is clogged. I cannot blow thru one way; I can bairly blow thru the other if I use all my might. How easy should the valve flow?

Thanks in advance,
John
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Old Mar 18, 2009 | 03:17 PM
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To answer my own question, the check valve should flow very good in one direction, almost no restriction.
I replaced the valve, the idiot light is now out.
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Old Mar 18, 2009 | 06:35 PM
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Did you have any trouble finding a replacement? I went to every chain parts store in my corner of town (at least 4) only to find that all of them stock a check valve which has one end too small to fit the AIR tubing. I gave in and drove twice as far and paid twice as much at the dealer to get one that worked.

Seemed very odd for a part that is common to many, many models dating at least back to the early '80s.

Lesson learned, maybe the next guy can benefit.

Last edited by jrp; Mar 18, 2009 at 06:38 PM.
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