Hiss noise only at 10 in Hg ?
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Hiss noise only at 10 in Hg ?
Just as the title states, when I am driving and hit 10 in Hg of vacuum I hear a hiss noise. That is the ONLY spot that it does it. Any other spots in vacuum, nothing. Any parts of boost, nothing. I have ran a thorough boost leak test and everything is fine. I am stumped on what this could be and thought maybe one of you have had the same thing before. Thanks in advance.
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That was my original thought, but why would it only leak at 10 in Hg
Also , wouldnt it also show up as a boost leak, I thought everything in vacuum would also be in pressure when on boost?
Also , wouldnt it also show up as a boost leak, I thought everything in vacuum would also be in pressure when on boost?
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i have a open element intake and already get a lot of noise. but i noticed a drop in power and increase in sound around 0-10 hg. i also noticed if im not at full boost, it will drop quickly, as well as not hold as high of a boost at wot.
so the other day i was inspecting my vacuum lines, and right off the boost controller in a vacuum line i found a pinhole leak that had threads coming out of it. after i fixed it, the extra noise stopped, my power increased(back to normal), and put me right back to 24 psi at WOT
so the other day i was inspecting my vacuum lines, and right off the boost controller in a vacuum line i found a pinhole leak that had threads coming out of it. after i fixed it, the extra noise stopped, my power increased(back to normal), and put me right back to 24 psi at WOT