Engine Compartment Fuel Lines, Connection Diagram

Engine Compartment Fuel Lines, Connection Diagram

CAUTION!
When installing fuel lines and hoses, ensure there is clearance to other components or to body. Contact can cause leaks.





1 Return line

• To fuel tank.

• Blue or with blue marking.

• Ensure seated tightly.

2 Supply line

• From fuel tank.

• White or with white markings.

• Ensure seated tightly.

3 Fuel rail

• For cylinder bank 2.

4 Fuel cooler

5 Test connection

• For cylinder bank 1.

• Tighten sealing plug to 27 Nm.

• Not available on all vehicles

6 Fuel rail

• For cylinder bank 1.

7 Tandem pump

• For cylinder bank 1.

• With vacuum pump.

• Tandem and fuel pump checking, refer to --> [ Tandem and Fuel Pump Checking ] Tandem and Fuel Pump Checking.

• Tandem and fuel pump, removing and installing, refer to --> [ Tandem and Fuel Pump ] Tandem and Fuel Pump.

8 Fuel temperature sensor (G81)

• For cylinder bank 1.

9 Fuel filter

• Removing and installing, refer to --> [ Fuel Filter ] Fuel Filter.

10 Fuel Pump (FP)

• For cylinder bank 2.

• Tandem and fuel pump checking, refer to --> [ Tandem and Fuel Pump Checking ] Tandem and Fuel Pump Checking.

• Tandem and fuel pump, removing and installing, refer to --> [ Tandem and Fuel Pump ] Tandem and Fuel Pump.

11 Fuel temperature sensor 2 (G248)

• For cylinder bank 2.

12 Test connection

• For cylinder bank 2.

• Tighten sealing plug to 27 Nm.

• Not available on all vehicles.