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Home >> Honda >> 1987 >> Prelude Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Pump - Electric >> Testing >> Pressure Test >> High Pressure Pump

High Pressure Pump

  1. Turn ignition switch to "OFF" position. Disconnect connector from main relay behind fuse box under dash. Attach jumper wire between 2 Black/Yellow wires.
  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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