Jetta Sedan V6-2.8L (BDF) (2003)
Fuel Pressure: Testing and Inspection
Fuel Pressure Regulator and Residual Pressure, Checking
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 3.0 bar positive pressure
Recommended special tools and equipment
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V.A.G 1318 pressure gauge
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VAG1318/10 adapter
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VAG1318/11 adapter
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VAG1318/16 hose adapter
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VAS5024 assembly tool for spring-type clamps
Test requirements
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Parking brake must be engaged or else daylight driving lights will be switched on.
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For vehicles with automatic transmission, selector lever must be in position -P- or -N-.
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Delivery quantity of Fuel Pump (FP) OK, Fuel Pump (FP), checking.
See: Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Pump, Checking
Test sequence
WARNING: Fuel system is under pressure! Before opening system, place rags around the connection point. Then release pressure by carefully
loosening connection.
Vehicles with engine code AFP