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Home >> Mercedes Benz >> 1985 >> 190D Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Diesel >> Testing >> Fuel Pump
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Fuel Pump

  1. Connect Bosch Digital Tester (MOT 001.03). Disconnect return flow line and hold into measuring cup.
  2. Turn ignition switch to "O" position, injection pump will then be at "0" delivery. Start motor for 30 seconds with separate starting cable, with battery intact (10 volts when starting). A minimum of .2 liters must be attained. If test fails, replace fuel pump.
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