Jump to content

Oil leak 3.1L MPFI


GPdriver1986

Recommended Posts

on my 91 Grand Prix there are two oil leaks. Heres a picture of where they are located. I know that the rocker cover gasket is broken because its leaking oil there. but at the back I don't know. On my engine there is an oil stain on the intake manifold in that area. Can anyone help me?

 

 

00-01-09-en05change.jpg

Link to comment
Share on other sites

Isnt the oil sender on that side where its circled on the back? I think it is, could be that, and where EXACTLY is the oil pump drive that O-ring leaks like sob.

 

Robby

Link to comment
Share on other sites

Isnt the oil sender on that side where its circled on the back? I think it is, could be that, and where EXACTLY is the oil pump drive that O-ring leaks like sob.

 

Well, I know on my 2.8L, the DISTRUBOR O-RING leaked but that was on the driver side under the throttle body like the oil-pump o-ring on the DOHC.

 

GPdriver1986, on the backside leak, is it deep down or right on the topside of the motor? If topside, I'd agree with the comments that the valve cover gaskets are needing replacement. Keep a tab on it, and if you could get / host closer pics, that will help out as well.

 

- RedFox340

Link to comment
Share on other sites

Well, I know on my 2.8L, the DISTRUBOR O-RING leaked but that was on the driver side under the throttle body like the oil-pump o-ring on the DOHC.

 

Thats what I meant. Im retarded :oops:

 

Robby

Link to comment
Share on other sites

Yes I think both rocker cover gaskets are leaking but it might have been fixed and the person that fixed it didn't wash the engine so the oil residue was left there. I will shampoo the engine and see what happens.

Link to comment
Share on other sites

Yes I think both rocker cover gaskets are leaking but it might have been fixed and the person that fixed it didn't wash the engine so the oil residue was left there. I will shampoo the engine and see what happens.

 

Yeah, keep us posted!

Simple Green does an excellent job of removing grease and grime!

 

- RedFox340

Link to comment
Share on other sites

Dont know if somebody answered this already, but i know i had two leaks on my Lumina. One was coming from the oil pump drive seal and the other was the intake. the earlier 3.1s have that problem of leaking. matter of fact the dealer i work at has a newer supreme in for the intake leak.

 

361237_2_full.jpg

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...