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Old 02-17-2012, 08:53 AM   #1
jollyblue84
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Default help me with my 95 jdm sti oil leak

Ok what's up everyone. I'm in a bit of a pickle lol. As I have stated before I am new to subarus tubo engines. I have a oil leak. Not a major one but a small one I can't find. It. Dosent drip when its parked but when its running I can see a small amount of smoking rising from the passanger hood vent. I have recently changed the rear main seal aswell as the valve cover gaskets. No blue smoke from the tail pipe except when I'm really pushing the car. Even then I'm really not sure its blue. Could just be me being nervous.

So I'm needing some suggestions on were to look. I was thinking maybe a gasket around the turbo. But I can't see any oil trails. So whatever is coming out is being burnt instantly. Thanks for any and all suggestons.
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Old 02-17-2012, 09:13 AM   #2
suberdave
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I would look around the turbo a bit better. oil feed lines leak right onto the up pipe and will not drip...

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Old 02-17-2012, 10:43 AM   #3
jollyblue84
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Quote:
Originally Posted by suberdave
I would look around the turbo a bit better. oil feed lines leak right onto the up pipe and will not drip...

-=Suberdave=-
www.suberdave.com
Does it have a gasket in that area?
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Old 02-17-2012, 10:55 AM   #4
jollyblue84
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Quote:
Originally Posted by suberdave
I would look around the turbo a bit better. oil feed lines leak right onto the up pipe and will not drip...

-=Suberdave=-
www.suberdave.com
Does it have a gasket in that area?
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Old 02-17-2012, 11:18 AM   #5
Dutch Scooby lover
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Nope, but the return hose can become brittle/hard, and the factory spring clamps can become too weak to seal the hose onto the barbs, especially when the old line is re-used after removing/disrupting the turbo.
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Old 02-17-2012, 12:02 PM   #6
jollyblue84
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Quote:
Originally Posted by Dutch Scooby lover
Nope, but the return hose can become brittle/hard, and the factory spring clamps can become too weak to seal the hose onto the barbs, especially when the old line is re-used after removing/disrupting the turbo.
So your saying is a rubber hose connevted to what I know as a shark bite. Looks similar to this =>>> ?
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Old 02-17-2012, 01:45 PM   #7
Dutch Scooby lover
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It's a piece of pipe with one small bead around the end, so that the hose has something to slide over.

The problem is that the hose clips (not wormdrive, but just a spring loaded clip) work perfect when the hose is new and flexible.

However, the temperature/oil etc cause the hose to become hard, and then a small amount of movement to the turbo can cause the seal bewtween the hose barb and the hose to break, and the clip hasn't got the strenght to create a new seal because the hose is hardened to much.

This is the sort of hose nipple i am describing.

(Not the threaded part, just the single ridge)


This is somewhat like the stock clamp (you can see it probably won't work to well on hardeneed stiff hose.


My advise would be to replace the oil return hose with some generic oil/fuel hose, and use worm drive clamps to secure it. If this hose is not the part that is currently leaking chances are it will start to sometime anyhow, and now is the time to fix it before it becomes a leak.
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Old 02-17-2012, 01:59 PM   #8
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Ok thanks a bunch both of you. Will check back in once I figure out if this is the issue.
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Old 02-18-2012, 01:08 AM   #9
Marnix
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Did you replace the washers when you replaced the valve cover gaskets? They usually leak too.
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Old 02-18-2012, 07:18 AM   #10
jollyblue84
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Quote:
Originally Posted by Marnix
Did you replace the washers when you replaced the valve cover gaskets? They usually leak too.
I replaced the ones towards the back of the valve covers. It was a O ring and a brass washer I think.
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Old 02-19-2012, 09:55 AM   #11
TommyAtomic
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are you still leaking oil or did a new return line fix the issue?
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Old 02-20-2012, 01:08 AM   #12
jollyblue84
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Quote:
Originally Posted by TommyAtomic
are you still leaking oil or did a new return line fix the issue?
Doing Monday morning after work. Ill let you know after I do the test runs. Thanks again for the help.
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Old 02-22-2012, 04:55 PM   #13
jollyblue84
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Quote:
Originally Posted by TommyAtomic
are you still leaking oil or did a new return line fix the issue?
Well benn 2 days. Haven't smelt or seen any burning oil. So I'm guessing its fixed. Thanks a bunch.
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