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Discussion Starter #1
just wondering why the hell my sierra is pushing oil out of the oil cap and PCV? it will do it for a while then stop for 50-100km?
 

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GIZMO said:
You need a new PCV valve. That one is intermittantly closing off.....or the PCV hose is clogged.
X2 -- Agreed!.
As a temporary expedient, you might try soaking the PCV valve in carb cleaner overnight, sealed in a small plastic baggie or container. Re-install in the AM and see if the problem comes back. A new PCV valve is pretty cheap.
 

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Discussion Starter #4
cheers guys,
I've soaked it over night and it seems to to have stopped, but getting a new one today to fix it once and for all.
 
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