Lubricating System Repair

Cause Correction Idle Speed Too Low Check / adjust low idle screw setting. OK Air in Fuel System Bleed the fuel system and check for suction leaks. OK Malfunctioning Fuel Return Overflow Valve Check / replace fuel return overflow valve. OK Fuel Transfer Pump Malfunctioning Check / replace fuel transfer pump. OK Injection Pump Timing…

Purpose:To determine if the PowertrainControl Module (PCM) has detected any fault conditions that would cause a hard start or no start condition. Key On Engine Off (KOEO) On-Demand Self Test is a functional test of the PCM performed on demand with the key on and the engine off. This test will check that all inputs…

Purpose:To determine if the PCM has detected any historical or intermittent fault conditions that would cause a hard start/no start symptom. The condition that caused a continuous DTC may no longer exist. Recommended Procedure: Perform the necessary vehicle preparation and visual inspection. Connect the OBDII Scan Tool / Tester to the DLC under the dash….

Diesel IQ is a free resource for Power Stroke and Cummins Diesel engine owners and technicians.

Cause Correction Engine Drive UnitsEngaged Disengage driven units and Check for loading from malfunctioning accessories. OK Crankshaft RotationRestricted Rotate the crankshaft to Check for rotational Resistance. OK Starting CircuitConnections Loose or Corroded Check and tighten Connections. OK Battery Charge Low Check battery voltage. OK No Voltage to Starter Solenoid Check voltage to Solenoid. OK Solenoid…