Pioneer MJ Posted March 4, 2012 Share Posted March 4, 2012 I just relpaced my air filter and there is oil in the filter from the vac hose....whats wrong? :dunno: Link to comment Share on other sites More sharing options...
cody4359 Posted March 5, 2012 Share Posted March 5, 2012 PCV maybe? Link to comment Share on other sites More sharing options...
500 MJ Posted March 5, 2012 Share Posted March 5, 2012 Blow-by. Lots of info on it in the "Tech" Section. Link to comment Share on other sites More sharing options...
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