Re: overboost other than BPC? leaky valve - Saab 9000 Bulletin Board - Saabnet.com
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Re: overboost other than BPC? leaky valve
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Posted by BobS (more from BobS) on Sat, 25 Jun 2011 17:57:33 Share Post by Email
In Reply to: overboost other than BPC?, SMP, Sat, 25 Jun 2011 16:25:56
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The valve should be air tight in both directions. Blow into the center port, then cover the port that is passing air, no air should escape from the uncovered port. Click the valve the other way, and the same effect should occur on the other open port. Bet your "R" port leaks.
I have a new valve that leaks little if any air out of the uncovered ports. Another valve, that operates erratically, leaks some from one port. Interestingly this valve has a noticeably weaker click sound for the leaking port. Must be something in there or a fault that prevents the disc from seating well in one direction.


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