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Home >> Geo >> 1991 >> Storm GSi, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Fuel System >> Fuel Pressure
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Fuel Pressure

  1. Release fuel pressure. See FUEL PRESSURE RELEASE under FUEL SYSTEM. Disconnect negative battery cable. Disconnect fuel line at fuel filter located below brake booster in engine compartment.
  2. Install Adapter (J-235957-10) between fuel line and fuel filter. Install Fuel Pressure Gauge (J-34703-1) on adapter. Disconnect vacuum hose from pressure regulator. Install negative battery cable. Ensure ignition has been off for at least 10 seconds.
  3. Turn ignition on and check fuel pressure. 2) Install negative battery cable. Check fuel pressure. See FUEL PUMP PERFORMANCE table. For complete Fuel System Pressure Test Procedure See DIAGNOSTIC CHART A - 7. Release fuel pressure and remove fuel pressure gauge. Release fuel pressure and remove fuel pressure gauge. Install fuel line at fuel filter and tighten to 25 ft. lbs. (34 N.m).
FUEL PUMP PERFORMANCE

Application Pressure psi (kg/cm2 )
Storm & Storm GSi (1) 35-42 (2.5-2.9)
(1) With ignition on, engine off and pressure regulator vacuum line disconnected and plugged.
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