Does A Bad Intake Manifold Gasket = Low Oil Pressure?
Posted 30 June 2009 - 09:07 PM
My intake manifold gasket has gone bad and is leaking coolant.
Would this gasket going bad also cause me to lose oil pressure? My oil pressure flutters/jumps while driving and then goes down to the red zone at idle. I hear a knocking or tapping noise when the pressure drops.
I have pulled the intake manifold off and just want to make sure I do everything possible to solve the oil pressure issue before I put everything back together. Any direction on where or what I should look for would be much appreciated.
The truck has had some overheating issues due to the cooling system failure.
Thank you for reading and any diagnostic help you can give me.
Posted 02 July 2009 - 02:02 PM
I drained my oil too, and it was like a milkshake too.
I am trying to determine if I have to replace my head gaskets. Please help, I'm stranded and so is my business.
Edited by cleancutlawnservice, 02 July 2009 - 02:04 PM.
Posted 02 July 2009 - 02:08 PM
Edited by Draenor, 02 July 2009 - 02:09 PM.
2004 GMC 2500 Sierra Metallic Gray CC/SWB
Posted 02 July 2009 - 02:28 PM
Take it to a shop that can inspect the head for you, and can resurface them if needed. If you go to a good shop, they can usually do it, or know where to take it. Might want to get the valve seals redone while you are at it. Good luck.
Posted 03 July 2009 - 09:03 PM
I think what it really boils down to is how much driving you did with compromised oil. If you drove the truck a lot, your main bearings probably crapped out (due to poor lubrication). That would explain your low oil pressure...
But if you didn't drive the truck too much in this condition... and you didn't drive it too far with the engine over-heated...
Then you might get lucky. You might replace the head gaskets (after checking to be sure the heads are not warped, and the block deck is okay, as mentioned above)... and put in good oil and all may be well.
I'm going to guess and say that if the heads are not warped, the block probably isn't either.
Edited by green 788, 03 July 2009 - 09:04 PM.
Posted 27 July 2009 - 03:30 AM