Fuel Pump Circuit

Turn ignition on, leave engine off. Fuel pump should operate for 2 seconds. If fuel pump does not operate, check fuses, fuel pump control relay, fuel pump, all electrical connections and ECM. See I - SYS/COMP TESTS article.

NOTE: Fuel pump performance is a measurement of fuel pressure availability, not regulated pressure.

FUEL PUMP PERFORMANCE

Application

⁽¹⁾ psi (kg/cm² )

Samurai

⁽²⁾ 34.1-39.8 (2.4-2.8)

⁽¹⁾	Specification is listed with ignition on and engine off.

⁽²⁾	Pressure should remain at 21.3 psi (1.5 kg/cm² ) for one minute after fuel pump is turned off.

REGULATED FUEL PRESSURE

Application

⁽¹⁾ psi (kg/cm² )

Samurai

⁽²⁾ 24.2-29.9 (1.7-2.1)

⁽¹⁾	Specification is listed with engine idling.

⁽²⁾	Pressure should remain at 21.3 psi (1.5 kg/cm² ) for one minute after fuel pump is turned off.