About Robert Greenfield Expertise I can answer any question pertaining to B5 model Passats short of automatic transmission rebuilds. I may be able to field some questions about other late model VWs with crossover engines. I do not address performance modification questions.
Experience I have been doing all my own work on my two Passats for a decade. I have been giving sound repair advice on PassatWorld.com for the past few years.
Education/Credentials No relevant auto related degrees unless a BSME counts.
Follow-Ups to Answer from Expert Robert Greenfield
gli16v writes on 2007-12-20 02:45:15
the first thing you should check is for good oil presser. if it is a little low but gets better as you rev it up. You might have a build up on the oil pump pick up. The 1.8t in the passat has been know for oil slug build up. The oil pan for this motor is not very deep because of the a frame. They do not hold a lot of oil for a turbo motor. if you have no oil presser I would replace the oil presser releife valve, and then check oil presser. If it still has low presser the oil pump is bad