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Old 11-17-2019, 03:14 PM   #1
What could go wrong
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Default Oil on uppipe, should I be concerned?

Hey guys, I have an 09 WRX 5mt. I have been noticing a melting rubber smell from the passenger side wheel well for a while now but assumed it was the AC drain on the new downpipe or something, but today I found some oil on the up-pipe. I have been doing lots of work around the power steering system, cooling system, and I just did an oil change if any of that matters. any advice on the leak? pictures at the bottom.

There is oil on the inside of the splashguard, and the heatshield, but the actual flange is bone dry. Maybe a valve cover seal or something? I kinda doubt its an oil line because I haven't really been losing more oil than normal, I only added 110ml of oil to keep the car completely topped up right before the last oil change. definitely not a head gasket failure, oil looked clean coming out and looks clean now a few days later, no smoke, no knock, coolant looks good, etc.

any advice would be greatly appreciated, thanks, guys.

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Old 11-17-2019, 05:24 PM   #2
dryvby
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Iíd suspect the valve cover gasket and check there. It could be the feed line leaving the head that supplies the turbo tho like you said.
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Old 11-18-2019, 12:57 PM   #3
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Quote:
Originally Posted by dryvby View Post
Iíd suspect the valve cover gasket and check there. It could be the feed line leaving the head that supplies the turbo tho like you said.
Thanks, ill check it out. Any advice on how to check that gasket? Is it obvious if you are looking for it?
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Old 11-18-2019, 02:33 PM   #4
subi-T
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I would check the Valve cover gasket as well but before taking that apart Iíd check the AVCS breather hose thatís on the top side valve cover.
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Old 11-18-2019, 02:44 PM   #5
klinebau
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Are you sure its not a torn CV boot that is flinging out grease?
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Old 11-18-2019, 05:01 PM   #6
dryvby
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Quote:
Originally Posted by What could go wrong View Post
Thanks, ill check it out. Any advice on how to check that gasket? Is it obvious if you are looking for it?


Yes. Jack the car up and youíll be able to see the bottom side of the whole gasket quite easily. Itís about a 30min job to replace it. You may want to have a replacement on hand along with the two spark plug gaskets.
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Old 11-18-2019, 06:16 PM   #7
NickVu
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Also those 10mm bolts on the valve cover gaskets bottom out on metal shoulders. Once they get tight, snug them down with wrist or finger force. The spec was something like 4.7ft-lb. They'll rip up threads or snap if you're not careful.
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Old 11-18-2019, 08:08 PM   #8
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Quote:
Originally Posted by subi-T View Post
I would check the Valve cover gasket as well but before taking that apart Iíd check the AVCS breather hose thatís on the top side valve cover.
AVCS Breather, ill check it out, thanks!

Quote:
Originally Posted by klinebau View Post
Are you sure its not a torn CV boot that is flinging out grease?
I'd sure hope not, just had them replaced... I'll add it to the list though!

Quote:
Originally Posted by NickVu View Post
Also those 10mm bolts on the valve cover gaskets bottom out on metal shoulders. Once they get tight, snug them down with wrist or finger force. The spec was something like 4.7ft-lb. They'll rip up threads or snap if you're not careful.
Thanks! I'm just hoping the job won't be hell if/when I go to do it


Ill post back in a couple of weeks when I get the time to put the car in the air. I have a suspicion the car has been like this for ages and I haven't been able to track down the leak for some reason, so I'll assume the engine inst going to explode provided I keep my eye on the oil level. Thanks for the help yall!
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Old 06-27-2020, 10:39 PM   #9
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Just for future reference, it was valve cover gaskets. Also, the bad gaskets may have helped drop oil pressure enough to be an accomplice in the destruction of my rod bearings.
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Old 06-28-2020, 08:46 PM   #10
IrishNYer
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Do you have an oil cooler? Because, I had my oil cooler go on me before and the air forced it onto the exhaust.
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