Fuel Supply System

System Description

The fuel supply system consists of a fuel tank, in-tank high pressure fuel pump, main relay, fuel filter, pressure regulator, injectors, and fuel delivery and return lines. This system delivers pressure-regulated fuel to the injectors and cuts the fuel delivery when the engine is not running.

Fuel Pressure

Relieving
Ilk V AIMIN(;
•   Do not smoke while working on the fuel system. Keep open flames or sparks away from the work area.
•   Be sure to relieve fuel pressure while the engine is Off.

NOTE: Before disconnecting fuel pipes or hoses, release pressure from the system by loosening the 6
mm service bolt on top of the fuel filter.
1. Disconnect the battery negative cable from the battery negative terminal.
2. Remove fuel filler cap.
3. Use a box end wrench on the 6 mm service bolt at the fuel filter, while holding the special banjo bolt
with another wrench.

4. Place a rag or shop towel over the 6 mm service bolt.

5. Slowly loosen the 6 mm service bolt one complete turn.

NOTE:
•   A fuel pressure gauge can be attached at the 6 mm service bolt hole.
•   Always replace the washer between the service bolt and the special banjo bolt, whenever the service bolt is loosened.
•   Replace all washers whenever the bolts are removed.