200 Quattro 20V Sedan L5-2226cc 2.22L DOHC Turbo (3B) (1991)
Fuel Pressure: Testing and Inspection
PUMP AND CHECK VALVE CHECKING
NOTE: Before opening any fuel system connection, always relieve system pressure. To relieve fuel system pressure, disconnect fuel pump electrical
connector at the pump, then start and run engine until it dies. Re-connect fuel pump connector. If engine does not run, slowly and carefully
loosen a hose connection at the fuel filter. Cover with a clean rag while doing so to avoid spraying fuel in your face.
WARNING:FIRE HAZARD! Do not smoke or create any sparks where odor of fuel vapor is present.
PRESSURE CHECK - PREPARATION
Fuel Rail Connection To Pressure Regulator
1.
Disconnect fuel line to pressure regulator at fuel rail.
Removing Pressure Regulator
2.
Remove fuel pressure regulator from intake manifold and disconnect fuel lines.
Fuel Connection Installed Position For Testing
3.
Re-install line on fuel rail as shown in illustration.