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Old 08-30-2010, 03:04 PM   #2
gandm99
Scooby Newbie
 
Member#: 58709
Join Date: Apr 2004
Chapter/Region: SCIC
Location: Los Angeles
Vehicle:
2004 WRX STi
WRB

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turned out it was engine bay heat that killed the check valve (krank vent). i put a brand new one in over the weekend and within 30 minutes of driving, it too had stuck open. Fortunately i was able to get it working perfectly once it cooled down.

i ended up re-routing my catch can tubing to avoid the high heat in the valve, and also added a heat reflective sleeve over it. so far it's all good.
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