volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 2877 > < With Manufacturer's Scan Tool|Page 2875
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Open shut-off valve on pressure tester (arrow).
The lever is parallel to direction of flow.

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Start engine and run at idle.

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Switch ignition off after pressure build-up.

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At same time pinch/seal return hose -3- together.

If the pressure does not drop:

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Replace fuel pressure regulator, item 5.

If the pressure drops again:

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Check pipe 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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