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Home >> Mercury >> 1984 >> Lynx LTS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - 4-CYL Diesel >> Testing >> Fuel System Testing >> Injection Pump Inlet Restriction
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Injection Pump Inlet Restriction

  1. Connect Pressure Test Kit (19-0002) or equivalent. Disconnect fuel inlet at injection pump. Install Adapter Tee (10575) in fuel line. Connect fuel line to tee. Connect tee to vacuum gauge.
  2. Run engine at 4000 RPM under no load. Vacuum should be less than 3 in. Hg. If not, check fuel lines for restrictions.
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