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International Automotive Technicians Network
Re: VW GTI intermittent loss of crankcase vacuum
Posted to Technical Discussion Forum on 1/14/2021

Some good suggestions have already been made. Weigh them out. I would start with a compression test or a simple leak down test. It sounds like that timing chain was loose enough to allow some intake valves to be bent. If valves are OK, I'm thinking carbon. I h... Login to read more.