volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 4801 > < With Manufacturer's Scan Tool|Page 4799
Page 4
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Open VAG 1318 pressure gauge shut-off tap (handle in through-flow direction).

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Start engine and run at idle speed.

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Switch ignition off after pressure has built-up. At same time pinch/seal return hose together.

If the pressure does not drop:

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Replace fuel pressure regulator, item 4.

If the pressure drops again:

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Check pipe connections, O-rings on fuel manifold and fuel injectors for leaks.

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Check pressure gauge for leaks.

NOTE:  Before removing the pressure gauge, remove fuse 28 and place a cloth around the connections to be loosened.

With Manufacturer's Scan Tool|Page 4801 > < With Manufacturer's Scan Tool|Page 4799