Thread: SHOULD I BUY THE 2004 Grand Prix GTP WITH THE OIL LEAK???????

Oil hitting the manifold would be a leaky rocker cover gasket. 20 bucks and 20 mins later you have fixed the issue.

The real question is what shape is the LIM in? Do you see any coolant pooling on the intake manifold? anything seem wet down there? Check the oil. If it looks like a milkshake you need to walk away!

Didnt even read any responses but you are looking at over 500 dollars in labor to have a shop do that kind of work if it even needs something simple like an oil pan gasket.

if you're willing and able to replace the LIM gaskets with new (metal) ones and replace the front valve cover gasket the motor will last a long time long as general maintenance are done accordingly.

i noticed you're in west chester, im in lancaster btw lol.

Originally Posted by Hardlyaninch

Didnt even read any responses but you are looking at over 500 dollars in labor to have a shop do that kind of work if it even needs something simple like an oil pan gasket.

Oil pan gasket is far from simple and quick on these cars...

Originally Posted by MikeJam

Given the information above, would anyone advise me to buy? Walk away?

I don't know what the problem is.
What seal is leaking oil? & is the shop is fixing it at no cost?
What does the oil look like?
How does the car drive?
Is the transmission sluggish or does it shift like it should?
What state is the LIM in? has it been upgraded to the metal one?

Originally Posted by Hardlyaninch

Didnt even read any responses but you are looking at over 500 dollars in labor to have a shop do that kind of work if it even needs something simple like an oil pan gasket.

Originally Posted by Yarbeau

Oil pan gasket is far from simple and quick on these cars...

Agreed with Yarbeau. Oil pan gasket on these cars isn't as simple as just unbolting the pan and replacing the gasket. It's not a "hard" job to do for someone with basic knowledge, but I would consider it to be a bit more work intensive to fix.

For the OP, the Lower Intake Manifold gaskets will leak - guaranteed, if it still has the plastic gaskets. If they aren't leaking now, it's only a matter of time. If the only issues are the leaking LIM and Valve Cover gaskets, I wouldn't hesitate to buy it. You can replace the LIM gaskets and both Valve Cover Gaskets together in a matter of a few hours. Buy your parts off RockAuto and you'll have everything you need for under $75.

Just a heads up you could always drop the subframe to replace the oil pan if you have something to support the weight and tranny from up top. Probably the easier way of doing it without pulling the motor or having to fiddle in a tight area.


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Mike,


Read the posts above and try to understand where the leak is - knowing this will help you make a decision of whether the issue is small or large. Lower Intake Manifold with milkshake oil is a definite walk away, other issues may be an easy fix. An existing issue may be a bargaining chip for you.

I don't even know why people are talking about the oil pan gasket since your leak is near the top of the engine. Based on what you've provided, and as the others have said, your most likely issue is the valve cover gasket (cheap and easy) or the Lower Intake Manifold gasket (cheap but a longer process). Both should have how-to write-ups here if you decide to do them yourself:

http://www.grandprixforums.net/forum...-Ups-Tech-Tips

if you saw oil smoke its a valve cover gasket gone bad. nothing else smokes. v/c are common enough. mine leaked, now it dont.

my oil pan leaks all over the place, not a hint of seeing or smelling oil from it. even when the oil pressure sensor blew out, still didnt smoke. it all hits the ground.


and tell the dealer to fix it before you buy it. then take it for a good long test drive to make sure its no longer leaking before you sign anything.