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Home >> Lincoln >> 1985 >> Continental Base, 5.0 F >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - 6-CYL Diesel >> Testing >> Injection Pump Internal Fuel Pressure Check

Injection Pump Internal Fuel Pressure Check

  1. Install 0-160 psi (0-11.25 kg/cm2 ) pressure gauge at banjo fitting of injection pump fuel return line. See Fig 1 .
    Fig 1: Injection Pump Internal Fuel Pressure Check Connect pressure gauge to banjo fitting of fuel return line.
    G3314
  2. Install tachometer and start engine. Check pressure.
    INJECTOR PUMP PRESSURE SPECIFICATIONS

    RPM Pressure: Psi (Kg/cm2 )
    800 345-455 (24-32)
    4500 108-124 (7.6-8.7)
  3. High internal pump pressure may be caused by clogged fuel distribution lines. Restricted fuel filter or internal pump problems cause low internal pressure. If pump causes either pressure problem, it must be replaced.
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