If there is oil dripping out of the bottom of you clutch housing then the seal is leaking and more than likely they damaged the seal during install. Intake valves do not leak oil. I would go to a different shop
Because it 's leaking- OIL, ANTIFREEZE, or vacume leak
Usually when you leak oil that's an indication that the intake manifold gaskets need to be replaced or your intake manifold is shot.
I just had the intake manifold gasket replaced on my 96 century yesterday and my bill was $450 but my gasket was only leaking out. If its leaking into your oil it may be more.
coolant leaking from around the valve cover can mean two diffrent things. ether the intake gaskets need to be changed or the head has a crake in the water jacket and need to be replaced. this also would involve removal of the intake and the heads. make sure the coolant it leaking around the intake before you go that far it might simply be the quick disconect were on of the heater hoses gos in to the intake on the right side of the motor coolant leaking from around the valve cover can mean two diffrent things. ether the intake gaskets need to be changed or the head has a crake in the water jacket and need to be replaced. this also would involve removal of the intake and the heads. make sure the coolant it leaking around the intake before you go that far it might simply be the quick disconect were on of the heater hoses gos in to the intake on the right side of the motor
I would suspect the manifold itself is leaking around the cooling passages. It will need to be removed and the gasket replaced.
PCV valve may need replaced or the air intake may be leaking. Check for holes in the intake system or vacuum leaks.
Yes. My 2000 Saturn had a leaking intake gasket, idle about 1900. Also caused misfire in idle and extreme acceleration. Test for leak using brake cleaner on suspected leak. I replaced gasket and all problems fixed.
I'm assuming your grand am has a 3400 v6 which are known for intake and head gaskets leaking. so its possible that one of those gaskets are leaking so bad that coolant is leaking from intake/heads down onto your valvetrain and then down into your oil pan. more than likely its your intake gaskets leaking.
Look for leaking antifreeze/coolant. Usually you can see it leaking around the top of the engine. Also check your oil, if it looks milky it has been mixed with coolant and you intake manifold gasket is leaking. That being said, it is possible to have a leaking intake gasket with no sign of leaking antifreeze. Most intake manifold issues/leaks are coupled with poor engine performance and even sputtering and lack of power.
Intake manifold at top of engine?
Most likely the intake manifold gasket is leaking.
The intake manifold are very bad about corroding a hole in them which means that you will have to replace it