opinions on my oil leak..93 atx

[[email protected]]

hey all i am looking for the most likely cause of this oil leak..any help would be great...thanks in advance

 

[[email protected]]

Btw car has 134k mi bag 60k done atrv100k

 

[luigisho]

what am I supposed to be looking at? Since there are different 60k references, (upper, lower), what did you have done and what brand did you use? I can't tell if there is a leak coming down or burning oil coming up off the cats. The usual suspects are the cam seals leaking at the cam sensor, front main seal at the crankshaft, & valve cover seals. You already have the intake off so I would pull the valve covers and replace those and the cam seals. You can remove the cam sensor and verify if that is leaking as there would be a good amount of oil right there.

 

[rubydist]

I expect you have leaks from the cam seals and from the valve cover gaskets (at least around the bolts). There may be more but there is too much stuff on the engine to know for sure...

 

[[email protected]]

Thanks Fred ..from the looks of it ..most is coming from up top...and yes there is a lot of it ..but feeling around all sides of the valve cover gasket it seems dry. Thanks again for the reply

 

[rubydist]

so maybe you want to pull the vc bolts out and put rtv around the rubber gaskets on those bolts and reinstall them to see how much that dries it up.

 

[luigisho]

remove the cam sensor and look around in the housing for leaks while you have the intake off. It is much easier to get cam seals to seat properly with the intake and valve covers off if they need replacing

 

[[email protected]]

i thank you guys for the replies ..as i have the parts and the intake off that is my next course of action ...just afraid of screwing up the rear valve cover gasket

 

[73jeepster]

I have a 92 sho. Don't all of these leak oil? Mine had 237k miles and leaks onto the exhaust somewhere. I've read about the catch can but I haven't added one because I don't know where to put it. I'm interested in any more advice you get too. Thanks

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[luigisho]

the catch can is plumbed to eliminate oil from making its way back into the intake via egr which I don't think 92's have. You will only eliminate oil leaks by replacing seals/gaskets and having them seat and seal properly.

 

[rubydist]

actually not the egr

the catch can will separate out the oil that is drawn back into the intake via the pcv system. the SHO motor doesn't have a pcv valve per se, it has a 'box' that is supposed to allow the oil to drop out of suspension, but it is less effective than it could be.

the catch can would be plumbed into the vacuum hose that runs from the intake back to the throttle body. that hose (if original) will be hard as a rock, so once you start messing with it, you are committed to replacing it!

 

[luigisho]

actually not the egr

the catch can will separate out the oil that is drawn back into the intake via the pcv system. the SHO motor doesn't have a pcv valve per se, it has a 'box' that is supposed to allow the oil to drop out of suspension, but it is less effective than it could be.

Yep. Faulty memory.

There are benefits to adding a catch can as far as intake gunk and such. Oil dripping on the exhaust will not be solved by plumbing a catch can. That's a leak from somewhere

 

[73jeepster]

Thanks for the replies.

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[73jeepster]

Where is the site sho source? I've read where others have purchased parts for sho's. I think there is also another site for parts?

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[luigisho]

Where is the site sho source?

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Google much?

http://www.shosource.com/catalog/index.php?osCsid=u3fjrps1ocj9favvcjpoja72c0

 

[[email protected]]

now that i have both valve covers off.. as fred had mentioned the problem seemed to be the vc bolt gaskets .they were rock hard and i could clearly see oil escaping .both valve cover gaskets were intact and no leaks .tomm i will remove the cam sensor and check behind it .all cam seals seem to be good for now .....thanks to all for the help

 

[zak]

Check your PCV system at both the throttle body and the top of the block, once it clogs it will force oil out of the valve cover bolts no matter what you do.

 

[itwonder]

I have a 92 sho. Don't all of these leak oil? Mine had 237k miles and leaks onto the exhaust somewhere. I've read about the catch can but I haven't added one because I don't know where to put it. I'm interested in any more advice you get too. Thanks

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Though there are many leaks, all do not leak! My advice: 1) Avoid using synthetic motor oil in these engines. My experience is conventional oil is mush less likely to leak in the SHO motor. 2) If you have a small leak, STP Oil Treatment in the silver bottle (not the blue bottle) may help. I will also help if your valve seals are tired. Those suggestions may generate some debate, however they are based on my experience over around 260K miles on my SHO. Also, I seldom recommend any sort of snake oil, but in the case of STP silver bottle, it does help with minor leaks.

 

[DeepPower]

Before looking for oil leaks, it's always a good idea to give the engine a good cleaning. Makes it easier to spot leaks after a few miles.