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Old 12-05-2012, 06:49 PM   #26
p0staldude
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Member#: 299478
Join Date: Oct 2011
Chapter/Region: E. Canada
Location: Montreal
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2008 WRX TP Stg 3.52
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I removed the IC and checked the end tanks. There was no oil and the clips looked secure. I also spayed the whole IC with brake cleaner while the engine was running and there was no RPM change.

Is there another way to check for leak? I read that some people pressurize the whole intake and check if the pressure drop / listen for a leak?
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Old 12-06-2012, 12:37 AM   #27
dead_eye
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Join Date: Jan 2012
Location: PHL
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2008 WRX

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Quote:
Originally Posted by p0staldude View Post
Is there another way to check for leak? I read that some people pressurize the whole intake and check if the pressure drop / listen for a leak?
I recall a thread here but cant find it. The guy used a pvc pipe end cap fitted with a pressure vale. The pipe cap was hose clamped into the intake right after the airbox.

But really, if you suspect a leak and cant find it, the best thing to do is take it to a mechanic who has a proper smoke test machine.

I got the P0171 code twice in the last month. The first time I thought it was the result of fuel injector cleaner I had used. But after thinking about it, both times I had started the car on a cold morning and idled it a while to let it warm up. It's bone stock, no mods.

Last edited by dead_eye; 12-06-2012 at 12:54 AM.
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