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Old 01-20-2012, 06:41 PM   #1
Scooby Newbie
Member#: 304784
Join Date: Dec 2011
Chapter/Region: South East
Location: Easley,SC
02 Impreza WRX STI

Default PCV valves

What type of problems can a bad PCV valve cause?
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Old 02-04-2012, 07:29 PM   #2
Scooby Newbie
Member#: 247111
Join Date: May 2010
Location: Napa, CA
2007 Impreza 2.5i
1971 VW Fastback


Usually it's poor idle/bad gas mileage. An easy way to check that it's still ok is to remove it and shake it back and forth. If its bad, you won't hear the little ball rattle. They're super cheap so you might as well replace it.
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