in short ++ - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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in short ++
Posted by Pierre in Ottawa (more from Pierre in Ottawa) on Fri, 5 Mar 2004 07:14:09
In Reply to: Re: Searching for a "true" PCV valve upgrade, Dean, Thu, 4 Mar 2004 16:11:25
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Basically, when vaccum exists in the intake (not TB),
the PCV system draws crankcase blow by through the small
vaccum hose off the TEE and through the one-way check valve.
When intake goes into boost, the check vlve blocks the flow
of air into the crankcase by shuting and the crankcase
blowby is then drawn into the intake for theturbo compressor
through the larger TEE hose. With a filter installed off the
TEE, not only will the one-way check valve live longer but
also one can stop oil fumes from entering the throttle body
into the engine which over time becomes quite muggy with gunk.
posted by 47.248....
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