volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Pressure Regulator and Residual Pressure, Checking - I|Page 6151 > < Fuel Pressure Regulator and Residual Pressure, Checking - I|Page 6149
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Fuel Pressure Regulator: Testing and Inspection
Fuel Pressure, Pressure Regulator and Residual Pressure

Fuel pressure regulator and residual pressure, checking

Function

The fuel pressure regulator controls the fuel pressure as a function of the Manifold Absolute Pressure (MAP).

The specified value for this test is dependent on the working pressure of the Fuel Pump (FP). This is about 4.0 bar positive pressure.

Recommended special tools and equipment

-

V.A.G 1318 Pressure gauge

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V.A.G 1318/7 Adapter

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V.A.G 1318/10 Adapter

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V.A.G 1318/13 Hose adapter

Test requirement

-

Delivery quantity of Fuel Pump (FP) OK, Fuel Pump (FP), checking.  See: Fuel Pump/Testing and Inspection/Fuel Pump, Checking/With
Manufacturer's Scan Tool

Test sequence

WARNING:  Fuel system is under pressure! Before opening system, place rags around the connection point. Then release pressure by carefully
loosening connection.

Fuel Pressure Regulator and Residual Pressure, Checking - I|Page 6151 > < Fuel Pressure Regulator and Residual Pressure, Checking - I|Page 6149