volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 4163 > < With Manufacturer's Scan Tool|Page 4161
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Open VAG1318 pressure gauge shut-off tap (handle perpendicular to direction of flow).

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Start engine and run at idle speed.

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Turn off ignition after pressure has built-up. At same time, pinch/seal return line together.

If the pressure does not drop:

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Replace fuel pressure regulator.

If the pressure drops again:

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Check line connections, O-rings on fuel rail and fuel injectors for leaks.

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Check pressure gauge for leaks.

NOTE:  Before removing pressure gauge, place a cloth around the connections to be loosened.

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