Oil In Knock Sensor
Thread Starter
Joined: Sep 2005
Posts: 741
Likes: 1
From: North Little Rock, Ar
Oil In Knock Sensor Has Any One Ever Found Oil In Knock Sensor Hole In The Valley Cover? Strange Thing Is There Is No Sign Of Oil Under The Intake. Only Thing I Can Think Of Is Oil Is Getting In Between Where Valley Cover And Block Meet Around The Knock Sensor. Any Ideas?
It seems like the only place oil could come from is bottom up. I had oil in mine too and decided to just replace the vally cover with the LS6 style b/c is comes with new seals for the Knock sensors and it helps the engine breathe better. I didn't know how to test whether or not the sensor was still working properly so I replaced the oil soaked one.
Thread Starter
Joined: Sep 2005
Posts: 741
Likes: 1
From: North Little Rock, Ar
yeah i replaced both mine during the intake swap, but i just put some sealer around the inside where the valley cover and valley meet down inside the knock sensor hole. had that happen on the back and rusted on the front. still have a low voltage input code for the back so am confused on why the front didn't have a code cause it was rusted. anyway i am not pulling the intake for awhile to find out. still have stock timing and air fuel is good 12.5-12.7:1 so not to worried about it.
My LS6 Valley cover leaks oil around the knock sensor as well...both actually. I have no idea why, but I just tried to seal it back up as best I could and slapped it back together. It has been fine, and the oil is staying put (as in it isn't using any). I don't think it should do it though...just don't feel like pulling the damned intake to fix it, although I might get pissed enough to if I keep having problems getting this stupid piece of **** SLP underdrive pulley off my crank 
Thread Starter
Joined: Sep 2005
Posts: 741
Likes: 1
From: North Little Rock, Ar
i don't think it should do it either, since the front is not like that. don't know how long it was like that. no ill effects so far other than bad knock sensor. will keep an eye on it and just play it by ear.
