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Old 10-21-2007, 08:36 PM   #2
MasterKwan
Scooby Guru
 
Member#: 98961
Join Date: Oct 2005
Chapter/Region: MAIC
Location: NOVA
Vehicle:
2003 WRX
Black

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Hmm, off the top of my head I suspect you need a motor. Does the knock change directly with RPM? What kind of oil do you use and have you checked it recently?

It could also be timing belt tensioners but, engine knocks seems more common.
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