Oil In Air Cleaner - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-22-2007, 11:40 AM   #1
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Default Oil In Air Cleaner

'94 SSE 136,000 miles.

I cleaned my K&N oil filter about 2 weeks ago. When I pulled out the dirty K&N I did not notice an oil whatsoever in air filter.
Ok, after I cleaned K&N filter I had my transmission rebuilt and used Engine Restorer (the stuff you buy in a can).
Today I noticed a tremendous amount of oil in my air filter. So much so that it was leaking out below air filter. I originally thought it was my Brake Pressure Modulator leaking.

Any ideas on what caused this. I've never had blow by on this car before.
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Old 10-22-2007, 11:49 AM   #2
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If it is engine oil, I'd suspect the PCV valve. Someone here had this problem several months ago on a Series I, I don't remember what his cause was.

Red/Tranny fluid, I'd suspect the vacuum modulator.
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Old 10-22-2007, 11:51 AM   #3
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I found it for ya. It was WJCollier07, and here is the link

HELP. Oil in intake?!?!?!?!?!


I believe that they found his problem to be that he just filled the oil up to fast.
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Old 10-22-2007, 12:26 PM   #4
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Just asking....have you checked your oil level?
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Old 10-22-2007, 09:21 PM   #5
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I didn't notice the color of the fluid being red. Appeared to me to be more oil color (i.e. light tan).

I cleaned up the oil, put in fresh air filter and new PCV valve. I'm going to keep an eye on it for a while. If happens again I will reopen this thread. I will try to remember to get back to you in a week to let you know if it solved the problem. If I don't you can email me at [email protected].

If I'm understanding where the trans vacuum modulator is located it sits right on the side of the trans with vacuum hose that runs up to the intake. I did notice that there is a brand new bright shiny modulator that was installed after transmission was rebuilt.
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Old 10-22-2007, 09:22 PM   #6
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Oh, sorry. Yes, I checked all fluids and they are fine. But I just had oil changed 2 days ago so will have to keep an eye on that.
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Old 10-22-2007, 09:22 PM   #7
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Filling up the oil too fast. Hmmm...interesting.
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Old 10-23-2007, 12:38 AM   #8
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Plus I don't think it is the PCV valve because I replaced this about 20,000 miles ago with one from the GM dealer.
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Old 10-23-2007, 12:41 AM   #9
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Quote:
Originally Posted by dougworner
Plus I don't think it is the PCV valve because I replaced this about 20,000 miles ago with one from the GM dealer.
That means nothing. You can get a bad one out of the box. The symptoms point to the PCV as one possible solution, and it'* a VERY inexpensive part that is very easy to replace.

Try it.
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Old 10-23-2007, 12:47 AM   #10
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Yeah. I was changing my oil and was filling it, not any faster than I've ever done before..and I could hear the pressure relieving through the INTAKE. Next thing I knew, I had oil on my ABS modulator and the ground. I think it was my pcv. The other one had to be original. I'd definitely recommend changing yours.

Edit:
wait a second... did you use...

THIS?

Or this?
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