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Oil filler cap oil blow-by

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Old 07-21-2011, 02:22 PM
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Angry Oil filler cap oil blow-by

Oil filler cap and oil also leaking at rocker cover gasket...please help (2007 A4 2.0 Turbo) do I have a vacuum buildup?
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Old 07-21-2011, 04:11 PM
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Default Re: Oil filler cap oil blow-by

Your valve cover is vented, so in order for it to be pressurized the vent would have to be plugged.

The valve cover gasket on the 1.8T/2.0T engines fail rather often - get it changed and inspect your PCV system for clogs/broken hoses/etc.
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Old 07-21-2011, 06:38 PM
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Default Re: Oil filler cap oil blow-by

PCV is a very likely candidate. Have had mine replaced under factory warranty at 55,000km.
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