Fuel System Cleaning Procedures

FUEL SYSTEM CLEANING
If a fuel system problem is due to contaminated fuel or foreign material in the fuel tank, the tank must be cleaned. If the tank is rusted or is still contaminated after cleaning, the tank must be replaced.

REMOVE OR DISCONNECT
1. Fuel tank from vehicle. Refer to Fuel Tank / Service and Repair / Fuel Tank Replacement.
2. One bolt and fuel tank protector from fuel tank.
3. Five screws and fuel gage sending unit from fuel tank.
4. Six screws and fuel pump from fuel tank.
5. Two clamps, two screws and Tank Pressure Control (TPC) valve from fuel tank.
6. Two clamps, two screws and fuel vapor separator from fuel tank.
7. Fuel tank inlet valve from fuel tank.

CLEAN
1. Fuel tank by filling with hot water and shaking vigorously for five minutes.
2. Fuel tank by draining it. Make sure that all of the water is removed from the fuel tank.

IMPORTANT: If the inside of the fuel tank contains any traces of rust after cleaning, replace the tank.

INSTALL OR CONNECT
1. Fuel tank inlet valve to fuel tank.
2. Fuel vapor separator and hoses to fuel tank; secure with two screws and two clamps.
3. TPC valve and hoses to fuel tank; secure with two screws and two clamps.
4. Fuel pump to fuel tank; secure with six screws.
5. Fuel gage sending unit to fuel tank; secure with five screws.
6. Fuel tank protector to fuel tank; secure with one bolt. Tighten fuel tank protector-to-fuel tank bolt to 25 Nm (18 lb. ft.).
7. Fuel tank to vehicle.