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Home >> Jeep >> 1988 >> Comanche Eliminator, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Multi-Point >> Operation >> Fuel Delivery

Fuel Delivery

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Power to fuel pump relay is supplied from ignition switch when in "ON" or "START" position, at which time the ECU supplies a ground for fuel pump relay. When relay contacts are closed, power is applied to fuel pump.

Fuel is drawn through one end of a roller-type electric fuel pump, compressed and forced out opposite end. Pump capacity is greater than maximum engine consumption so that pressure in fuel system is always maintained.