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View Full Version : Oil leak - head gasket or intake?

Runs12s
11-08-2010, 07:45 PM
I need to fix the car, the head gasket is leaking oil down the back of the block.

Thinking of naming the car the money pit. That might make a good license plate.
WildBillyT
11-09-2010, 08:13 AM
I am sorry to say I will not be able to make it after all... I need to fix the car, the head gasket is leaking oil down the back of the block.

Thinking of naming the car the money pit. That might make a good license plate.

Sure it's not the intake?
Runs12s
11-09-2010, 05:38 PM
Sure it's not the intake?

It looks like it was coming from the back side of the head... I will have to take another look at it. I really didnt look at the back of the manifold.
Tru2Chevy
11-09-2010, 05:42 PM
It looks like it was coming from the back side of the head... I will have to take another look at it. I really didnt look at the back of the manifold.

Yea, take a look - LT1s are notorious for leaking at the rear intake seal. Most of the time it's minimal and driving the car that way won't be an issue. Just remember to check your oil :D

- Justin
deadtrend1
11-09-2010, 06:02 PM
Yea, take a look - LT1s are notorious for leaking at the rear intake seal. Most of the time it's minimal and driving the car that way won't be an issue. Just remember to check your oil :D

- Justin

+1

Pull the intake off, put on some new gaskets and put a nice thick bead of silicone on it front and back. Takes about a hour and half. Have someone help seat the manifold so you dont smear the bead putting it on.

It can just start to drip on the exhaust and smoke a bit if ignored.
Pampered-Z
11-10-2010, 10:52 AM
The oil Pressure sending unit is back there. They can leak too. Or even a valve cover gasket.

Oil really doesn't pass thru the head gasket, a coolant leak could be a head gasket, oil is more likely something easier and cheaper to fix!

First thing I would do is just check the valve cover bolts are tight ( go easy, it doen't take much to break them! )

Then clean everything up and try to locate where it's coming from.
Slow-V6
11-10-2010, 07:01 PM
Might also be a Rea main seal. It was smoking up through the engine bay so I thought it was an intake gasket. Ended up being a Rear main. Mine was leaking a while back but had it replaced when we did the Stall Converter..
sweetbmxrider
11-10-2010, 07:05 PM
get a mirror and look