oil leak out of back on intake, not OPSU
02-13-2012, 08:50 PM
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oil leak out of back on intake, not OPSU 2002 z28. Stock. There is a significant oil leak out of the back of the intake. Pulled the intake off. It seems to be coming from where the MAP sensor is, but how can this be? 98% sure it isn't the OPSU because there an obvious trail from the MAP sensor plug. Also found the PCV line to be busted in half in 2 different places. Any help is greatly appreciated!
02-13-2012, 09:08 PM
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Just realized the one break in the PCV line is right above where the MAP sensor is. It appears to have been leaking from there. I noticed the car seemed to be a little over full on oil, so am I correct as in that is how the oil made its way into the pcv system?
02-13-2012, 09:20 PM
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It is a pretty significant leak. Runs down both sides of the bellhousing. Leaves a pretty decent sized puddle. Also leaves little spots where the oil is dripping when backing out of the driveway.
02-14-2012, 08:27 PM
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Update: It is still leaking. Didn't see any signs that it was coming from OPSU when I had the intake off. Oil was all over the back of the intake above the MAP sensor. I re-did the whole PCV system where it appeared to be coming from.. yet it is still leaking. Any ideas?
02-14-2012, 08:31 PM
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I pulled my transmission twice chasing a leak thinking it was my rear main. It ended up being my opsu but it definately didn't look like it was coming from there
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02-20-2012, 10:00 AM
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Well I went ahead and replaced the knock sensor oil seals, the valley cover gasket,the seal on the CPS..I have no idea of anything else that could be leaking oil all the way up to the top of the block where the intake meets the block.
