Ok , i just did my intake manifold gasket. Well My car has been leaking the same amout after doing it twice. It is coming from the back of the block (on top). There is something with steel hoses connected to it, on top of the block right behind the intake manifold. Its right next to the egr valve...i tried to find the part number and what it is in my parts diagram but cant find it. I believe this could be the source of my oil leak (depending on what it is). Its not connected to the intake manifold in anyway. It is still there when you take off the intake and doesnt connect to the intake by any lines. What could it be. Its square and is about 1"x1" with steel hoses.

 

Do you know what year your car is? There are some differences by year model.

back of engine

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Its a 95. It would appear to be the oil pressure sensor, or what it attaches too.I dont know if i remember the black sensor attached to it but i guess it has to be since i know that the engine actually is a 95 and not a 93. Hmm i guess that surely can be the problem, how likely, guess we will see. Im praying that it is the sensor in some way or another, b/c i have done the intake gasket enough times this year.thanks shoebox.

 

Do you have to have intake off to replace or seal the angle fitting and sensor? Anyone ever had a problem with it leaking before?

 

Potential leak points would be: the sensor itself, where the sensor screws into angle fitting #1 , where angle fitting #1 screws into angle fitting #2, where angle fitting #2 screws into the block.
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Use pipe dope or thread sealant on the threads when re-assembling.

I think you could remove everything completely with the intake manifold still on. You would have to disassemble all the pieces listed above one at a time, though. Taking the EGR valve off would give room to work on removing the angle fittings. Just the sensor can be removed without taking the EGR valve off.

Look back there with a mirror to see if you can locate a trouble spot.

 

Thanks a lot. I will probably tackle the feet sometime Wed. I hope that is the problem. I mean what are the chances of doing the intake manifold twice and it leaking the exact same each time. Hmm i put a hell of a lot of RTV on there too. Is there anything else on the back of the intake or block that could be leaking right around in that area?

 

Ok well here is what i found. I started it up and looked at the back with a mirror at the best angle that i could get. At first i saw nothing, i let it idle for a good minute or so and still saw nothing. Then i revved the engine (at the throttle body) and saw oil shoot up. It shot up either right in front of the oil pressure sending unit fitting, or it was the fitting itself and shot it out. It didnt just seep through, it literaly shot out.I didnt have time to mess with it last night other then that. SO i was curious , how much pressure would be in the lifter valley, and would it be enough to literaly make it shoot out and through the gasket, or with it shooting out like that, would it more likely have to be the fitting? Im aiming at the fitting. i just dont see there being that much direct pressure on the oil in the lifter valley.

 

The fitting or sensor is going to be the best bet as the source of the leak if it is squirting out.