Procedures

DRAINING FUEL TANK

Conventional Procedure





WARNING: The fuel system may be under constant fuel pressure even with the engine off. This pressure must be released before servicing the fuel tank.

Due to a one-way check valve installed into the fuel fill fitting at the tank, the tank cannot be drained at the fuel fill cap.

1. Perform the fuel system pressure release procedure Service and Repair
2. Disconnect the fuel supply line (2) from the fuel rail Service and Repair.






NOTE: Tool number 8978-2 is used on 5/16" fuel lines while tool number 8531-1 is used on 3/8" fuel lines.

3. Install the appropriate fuel line adapter fitting from the Decay Tool, Fuel 8978A to the fuel supply line. Route the opposite end of this hose to an OSHA approved fuel storage tank such as the John Dow Gas Caddy 320-FC-P30-A or equivalent.
4. Using a diagnostic scan tool, activate the fuel pump until the fuel tank has been evacuated.

Alternative Procedure





NOTE: If the electric fuel pump is not operating, the fuel tank must be removed and drained through the fuel pump module opening of the fuel tank.

1. Perform the Fuel System Pressure Release procedure Service and Repair
2. Disconnect and isolate the negative battery cable (1).
3. Raise and support the vehicle.
4. Remove the fuel tank Fuel Tank - Removal





5. Remove the fuel pump module (1) Fuel Tank - Removal
6. Position a 3/8" hose into the fuel pump module opening of the fuel tank.
7. Attach the opposite end of this hose to the Fuel Chief Gas Caddy 320-FC-P30-A or an OSHA approved gas caddy.
8. Using the gas caddy, evacuate the fuel tank.