Fuel System Schematic
WARNING: This page is about a different car, the 2015 Volkswagen Beetle, 2014 Volkswagen Beetle, and 2013 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
- Follow the guidelines for a clean working environment when working on the fuel system. Refer to PARKING/AUXILIARY HEATER AND FUEL SYSTEM CLEAN WORKING CONDITIONS .
- Always follow these rules before and during work.
- If fuel system components between the fuel tank and high pressure fuel pump were removed or replaced, the fuel system must be filled in order to bleed it. Refer to FUEL SYSTEM, FILLING/BLEEDING . (Never let the high pressure pump run dry).
- Fuel Metering Valve -N290-
- Do not open
- Fuel High Pressure Pump
- Removing and installing. Refer to HIGH PRESSURE FUEL PUMP .
- The fuel system "must" always be filled after replacing (never run dry) (refer to FUEL SYSTEM, FILLING/BLEEDING ), Fuel System, Filling.
- Fuel Pressure Sensor -G247-
- Removing and Installing. Refer to FUEL PRESSURE SENSOR -G247- .
- Rail Element (High Pressure Reservoir)
- Fuel Pressure Regulator Valve -N276-
- Removing and Installing. Refer to FUEL PRESSURE REGULATOR VALVE -N276- .
- 80 Nm
- Fuel Injector (Injector)
- Cylinder 1 Fuel Injector -N30-
- Cylinder 2 Fuel Injector -N31-
- Cylinder 3 Fuel Injector -N32-
- Cylinder 4 Fuel Injector -N33-
- Removing and Installing. Refer to FUEL INJECTORS .
- Fuel Return Lines
- The fuel return line must be routed correctly. They may be replaced only with the pressure retaining valve.
- Run the engine at idle for approximately two minutes after replacing to bleed the fuel system and then check the fuel return lines for leaks.
- Pressure Retention Valve
- The check valve always maintains a residual pressure (control quantity) of approximately 10 bar in the fuel return lines.
- The fuel injectors require this control quantity to function correctly.
- The pressure retaining valve must be replaced completely with the fuel return lines. See -item 7-.
- The engine must run at idle for approximately two minutes after replacing to bleed the fuel system.
- Pressure Retention Valve in Fuel Return Line, Checking. Refer to PRESSURE RETAINING VALVE IN FUEL RETURN LINE, CHECKING .
- Fuel Tank
- Refer to DESCRIPTION AND OPERATION .
- Fuel Filter
- Refer to DESCRIPTION AND OPERATION .
- Auxiliary Fuel Pump -V393-
- Removing and installing. Refer to REMOVAL AND INSTALLATION .