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Tech & Fab
Pcv negative pressure?
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<blockquote data-quote="Rjhoward32006" data-source="post: 608934" data-attributes="member: 4043"><p>Well thats what i'm trying to fix before now it has had positive crankcase pressures. Enough to blow oil out the breathers on the valve cover when i tried that. </p><p>Compression and leakdown tests are within spec. Thats why i am now going to the negative pressure set-up to see if it helps. I just think the way i have it now might be a little too much negative pressure but from what i have researched it can have up to about 20in hg vaccum. I bought a gauge so i will test tonight or in the am and see what it is.</p></blockquote><p></p>
[QUOTE="Rjhoward32006, post: 608934, member: 4043"] Well thats what i'm trying to fix before now it has had positive crankcase pressures. Enough to blow oil out the breathers on the valve cover when i tried that. Compression and leakdown tests are within spec. Thats why i am now going to the negative pressure set-up to see if it helps. I just think the way i have it now might be a little too much negative pressure but from what i have researched it can have up to about 20in hg vaccum. I bought a gauge so i will test tonight or in the am and see what it is. [/QUOTE]
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