volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Pump Control Unit > < Delivery Rate, Checking|Page 3553
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‹› When releasing control button of hand held remote starter (jumper), fuel pressure decreases to approx. 5.6 bar.

If pressure drops below 4.0 bar again:

(Leak on fuel tank side)

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Check connections to fuel tank for leaks.

If no malfunction can be found:

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Check fuel filter for leaks.

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Check fuel line to flange assembly for leaks.

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Check all additional fuel lines in fuel tank for leaks.

If no malfunctions are found on fuel line:

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Pressure relief valve in flange assembly faulty.

-

Replace flange assembly which contains the pressure relief valve.

Fuel Pump Control Unit > < Delivery Rate, Checking|Page 3553