Schematic Overview - Fuel System
WARNING: This page is about a different car, the 2016 Audi Q5, 2015 Audi Q5, and 2014 Audi Q5. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Danger of malfunction caused by dirt.
- Observe, refer to CLEAN WORKING CONDITIONS .
Follow the points below to avoid running the high pressure fuel pump dry (very low tolerances) and to start the engine quickly after replacing the components:
- If fuel system components between the fuel tank and high pressure fuel pump were removed or replaced, the fuel system must be bled, refer to FUEL SYSTEM, FILLING/BLEEDING .
- If the high pressure fuel pump was removed or replaced, then bleed the fuel system before starting the engine for the first time. Filling the fuel for the first time, refer to FUEL TANK, FILLING WITH FUEL AFTER INSTALLING HIGH PRESSURE PUMP .
NOTE:
If these instructions are not followed, the high pressure pump will be damaged during the first filling.
- Fuel Metering Valve -N290-
- Do not open
- High Pressure Pump
- Overview, refer to OVERVIEW - HIGH PRESSURE PUMP .
- Fuel rail
- For cylinder bank 1 (right)
- Tightening specification: 22 Nm
- Fuel Pressure Regulator Valve -N276-
- Cannot be used again
- Overview, refer to OVERVIEW - FUEL INJECTORS .
- Fuel Pressure Sensor -G247-
- Tightening specification, refer to Figure.
- Fuel rail
- For cylinder bank 2 (left)
- Tightening specification: 22 Nm
- Injector
- Overview, refer to OVERVIEW - FUEL INJECTORS .
- Fuel Supply Hose
- Do not disassemble
- Replace completely along with the restrictor
- Restrictor
- Component location, refer to Fig 2.
- There is remaining pressure in the fuel supply hoses
- Not able to be replaced separately; replace the fuel supply hoses if they are faulty
- Checking, refer to FUEL RETURN LINE RESTRICTOR, CHECKING .
- Transfer Fuel Pump -G6-
- Fuel Filter
3 -
Restrictor