A4 Sedan L4-1.8L Turbo (AEB) (1997)
Fuel Pressure Regulator: Testing and Inspection
Fuel Pressure Regulator and Residual Pressure, Checking
The fuel pressure regulator controls the fuel pressure depending on intake manifold pressure.
Required special tools and test equipment
-
Pressure tester VAG 1318
-
Adapter 1318/11
-
Adapter 1318/12
-
Adapter 1318/13
Test requirements
-
Fuel pump delivery rate must be OK; checking:
Checking
WARNING!
The fuel system is under pressure! Before loosening hoses or opening the test connection, cover the connection with a rag Only then, open
carefully to slowly release pressure
-
Open fuel filler cap briefly (release pressure).
-
Cover the fuel supply line connection (arrow) to protect against fuel spray.
-
Slowly open connection and catch leaking fuel.
-
Connect pressure tester VAG 1318 to fuel rail using adapters VAG 1318/11, VAG 1318/12 and VAG 1318/13.
NOTE: The valve on the pressure tester must be open (lever pointing in direction of flow).