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Home >> Acura >> 1987 >> Legend LS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Pump - Electric >> Testing >> Pressure Test >> Low Pressure Pump

Low Pressure Pump

  1. Turn ignition switch to "OFF" position. Disconnect connector from relay from behind fuse box. Attach jumper wire between 2 Black/Yellow wires in fuel pump cut-off relay connector.
  2. Relieve fuel pressure. Disconnect fuel return hose from regulator. Hold measuring cup under fuel hose from regulator. Turn ignition switch to "ON" position for 10 seconds.
  3. Measure amount of fuel flow. Flow amount should be 7.8 ounces (230 cc). If fuel flow is less than specification, check fuel filter, clogged fuel line, bad pressure regulator.
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