The fuel filter removes particulate matter from the fuel system that might clog the small orifices of the fuel distributor on CIS-E equipped vehicles or restrict the fuel injectors. According to the manufacturer, unless the fuel system is damaged or contaminated, the filter is large enough to handle all normal fuel filtering requirements for the life of the engine. However, changing this filter more often than recommended can ease the load on the fuel pump, especially on higher mileage vehicles.
The fuel filter is under the car next to the fuel pump reservoir and looks like a large, metal container. Arrows point the direction of fuel flow through the filter. Banjo type fittings with copper gaskets connect the fuel lines to the filter. Always replace these gaskets with the original copper type gaskets any time the fittings are loosened.
- Relieve the fuel system pressure.
- Raise and safely support the rear of the vehicle. Have a pan ready to catch the fuel that will unavoidably run out.
- Have a rag handy and wear safety glasses when loosening the fittings. The system will be under pressure and fuel will be sprayed.
- Hold the filter as necessary with a 19mm or 22mm wrench and loosen the fittings with a 17mm wrench. If space permits, use a flare type wrench. Wrap the filter and wrenches with a rag to contain any pressurized fuel. Have the catch pan ready.
- Disconnect the fuel lines, loosen the mounting bracket and remove the filter.
- Install the new filter but Do NOT tighten the mounting bracket yet.
- Make sure all fittings and sealing surfaces are clean. Install the banjo bolts with new copper gaskets and torque to 14 ft. lbs. (20 Nm).
Most vehicles use a fuel filter mounted under the vehicle, below the fuel tank or in the engine compartment. An arrow on the filter indicates fuel flow direction. Use care not to mix up fuel supply or return lines. Fuel pressure applied to the return side of the system will cause damage.
- Before servicing the vehicle, refer to the precautions section.
- Properly relieve the residual fuel pressure.
Remove or disconnect the following:
Negative battery cable
Install or connect the following:
NOTEBe sure the arrows are pointing in the direction of the fuel flow
New fuel filter in the bracket
- Start the engine, check for leaks and repair if necessary.