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Home >> Mercedes Benz >> 1986 >> 300E Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Cis-E Fuel Injection System >> Component Testing >> Fuel Delivery & System Pressures >> Full Load Enrichment

Full Load Enrichment

  1. Connect meter adapter cable between differential pressure regulator and multimeter. Start engine and bring it to operating temperature. Confirm that lambda control is working. Unplug connector from throttle valve switch. Bridge 2 leads on wiring to ECU.
  2. Current reading should be constant at 7-9 mA. Lower chamber pressure should be about 5.8 psi (.4 kg/cm2 ) less than measured system pressure. If pressure reading is not correct, test control current to differential pressure regulator and test TD ignition signal.
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