2004 Subaru STi Leakdown test
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Uploaded by defekticon on Apr 18, 2011
Hot engine, car is experiencing "excessive crank case pressure" causing blowby on the compressor side of the turbo as well as oil leaking through the CHRA on the hot side.
Cylinder 1: 5%
Cylinder 2: 9%
Cylinder 3: 9%
Cylinder 4: 7%
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@wstypula84 it was open, and you're right that air was coming from the breather down through the AOS and back to the TID. I was wrong to say it was a turbo issue.
defekticon 9 months ago
Its probably coming from the valve cover breathers if you did not block off the lines. they connect to the inlet. That means the leak is via the pistons rings. Next time you do this you should open the oil filler cap and see if the air comes from there.
wstypula84 9 months ago