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Home >> Merkur >> 1986 >> XR4Ti Standard >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Ford MPI >> Testing >> Low Pressure Pump Feed Circuit
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Low Pressure Pump Feed Circuit

  1. Lower fuel tank. Disconnect fuel pump wiring connector and connect test light from ground to Black/Red wire in harness side of wiring connector. Turn ignition switch to "RUN" position.
  2. If light comes on for about one second, feed circuit is okay. If light does not come on, repair open in feed circuit.