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Puddle of oil in air filter line and throttle body

Tiny
JTS234
  • MEMBER
  • 1992 OLDSMOBILE CUTLASS
  • 3.1L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 80,000 MILES
I have the car listed above Cutlass Supreme. It has injector problems at least I think. As I was taking apart the car to get to the injectors I found oil. It wasn’t a little oil it was a lot of oil. It was inside the tube connecting the throttle body and air filter. There was also some inside the throttle body. I cant find a PCV valve. So I’m not sure if I have one or what I should do. Is this even something to be concerned about? Any help would be greatly appreciated thank you in advance.
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Tuesday, March 10th, 2020 AT 2:13 PM

7 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

The PCV valve is in the back valve cover. I attached pictures for you.

It may be the valve but I doubt it. I think you have excessive blow-by from worn piston rings that send oil vapors back into the intake system.

Roy
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Tuesday, March 10th, 2020 AT 3:07 PM
Tiny
JTS234
  • MEMBER
  • 10 POSTS
If it’s the pistons then I’m assuming that means scrap the car? I’ll look into the PCV valve. Hopefully it’s the PCV but I doubt it myself. Thanks for the help I appreciate it.
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Tuesday, March 10th, 2020 AT 3:26 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Always glad to help.

Roy
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Tuesday, March 10th, 2020 AT 3:28 PM
Tiny
JTS234
  • MEMBER
  • 10 POSTS
I found the PCV it’s completely missing. I think I should buy one and put it in. Thanks again for the help.
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Tuesday, March 10th, 2020 AT 4:31 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, install the new one and see what happens.

You are welcome.

Always glad to help.

Roy
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Tuesday, March 10th, 2020 AT 4:36 PM
Tiny
JTS234
  • MEMBER
  • 10 POSTS
Apologies I made a mistake. I was rushing and didn’t follow the diagram. Apologies for continuing to message you.
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Tuesday, March 10th, 2020 AT 4:38 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
No worries. I knew what you meant.

Roy
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Tuesday, March 10th, 2020 AT 4:41 PM

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