Found oil around knock senor when doing headgasket????
12-15-2012, 10:52 PM
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Found oil around knock senor when doing headgasket????
Hi I was doing some head gaskets on my 91 4runner 3vze today and when I pulled the the intake w/ the injectors in it I found the cavity below with the knock sensor with probabily a couple cups of oil in it sitting in the cavitys. I can not believe this much oil could get in there from a bad head gasket. Any Ideas?
12-16-2012, 05:59 AM
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Yes, oil can get in there from a failed HG. There may be a path for the oil from leaky VC gaskets to get in there too. The oil in that well is often mixed with coolant from the water by-pass tube leaking where it attaches with the two screws or pinholes in the tube. Interestingly, under those two screws is a bit of FIPG/RTV that makes the seal...there is no gasket.
Replace the knock sensor wire while you are there since the heat makes it very brittle.
Replace the knock sensor wire while you are there since the heat makes it very brittle.
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