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Home >> Jeep >> 1989 >> Wagoneer >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - 4.0L MPFI >> Operation >> Fuel Rail
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Fuel Rail

The fuel rail supplies fuel to the injectors and is mounted to the intake manifold. The fuel pressure regulator is attached to the rail and the fuel pressure test port is integral with the rail. See Figure . The fuel rail is not repairable.