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Re: VW GTI intermittent loss of crankcase vacuum
Posted to Technical Discussion Forum on 1/13/2021 2 Replies

What kind of scanner are you using? Are you sure it's in closed loop? I've had a few of them that take at least 10 minutes adjust fuel trim.

How does it run with the intake hose capped at the breather? Any obstructions or test caps left in that hose?

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