Fuel Supply System

Fuel Supply System

Safety Precautions

WARNING:
- Fire hazard. DO NOT smoke or work near heaters or have anything in the area that can ignite fuel.
- Fire hazard. Fuel system is under pressure. Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the connection.
- BEFORE beginning repairs, the suction hose of an exhaust extraction system must be located near the fuel tank opening so that escaping fuel vapors can be immediately sucked off.
- If no exhaust extraction system is available, a radial fan (motor located outside airflow) with volume of at least 9 cfm may be used.
- AVOID skin contact. Wear fuel resistant gloves whenever working with open parts of the fuel system.

BEFORE beginning repairs on the fuel supply system:
- Fire hazard. When working on the fuel system DO NOT smoke, work near heaters or have anything in the area that can ignite the fuel or fumes.
- Switch the ignition OFF.
- Briefly open and then close the fuel filler cap.

When removing and installing components from filled or partial filled fuel tanks observe the following:
- The fuel tank should only be partially filled with fuel. How much fuel can be in the tank can be read in the relevant work procedure. If necessary empty fuel tank.

When removing and installing the fuel tank observe the following:
- For weight reasons the fuel tank must be empty. If necessary empty fuel tank.

Make sure the ignition is switched off when:
- Disconnecting the fuel injection system wiring.
- Connecting or disconnecting the test equipment leads.

BEFORE cranking the engine at starting RPM (i.e. when checking compression) disable the ignition and fuel injection systems:
- Disconnect the ignition coil power output stage.
- Disconnect harness connectors from all fuel injectors.
- After the work is completed, erase the Diagnostic Trouble Code (DTC) memory.

The following measures must be made before beginning work on the fuel system:
- Disconnect ground strap from battery with ignition off.
- Open fuel filler cap briefly and close again.

When removing and installing of components from filled or partly filled fuel tanks pay attention to the following:

WARNING: The fuel tank may only be partially filled . How much fuel can remain in the fuel tank, is to be reread in the respective working description. if necessary, empty the fuel tank.