Passat GLS 4Motion V6-2.8L (ATQ) (2002)
If pressure does drop again:
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Open stop valve of pressure gauge V.A.G 1318 (lever in direction of flow -arrow-).
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Start engine and let run at idle.
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Wait until pressure has dropped, and then switch off ignition. Simultaneously pinch return hose -3- tightly together.
If pressure does not drop:
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Replace fuel pressure regulator, item 5 .
If pressure does drop again:
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Check whether line connections, O-rings in fuel rail, and fuel injectors are properly sealed.
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Check whether pressure gauge is properly sealed.
NOTE: Before removing pressure gauge, put cleaning rags back around line connection which is to be disconnected.