Symptom An Electronic Control Module (ECM) reset occurs when the ECM momentarily reboots or is turned OFF and ON while the engine is operating. Symptoms…

1. Remove the valve cover following the procedure in the Engine Service Manual. 2. Pressurize the cooling system to 96 kPa (14 psi) 3. Inspect…

1. Remove front cover and inspect gaskets and sealing surfaces following the procedure in the Engine Service                 …

1. Drain coolant from the system. 2. Remove the coolant inlet and outlet hoses for the air compressor from the crankcase. 3. Fill air compressor…

Procedure 1. Check oil level to verify oil contamination complaint. • The presence of coolant in the oil will generally give the oil a dark-gray…

Symptom When the crankcase lube oil is contaminated with coolant, the oil will have a dark-gray or black sludgy appearance. The crankcase may also be…

1. Remove the valve cover following the procedure in the Engine Service Manual. 2. Check all injector hold-down clamps for correct torque. 3. Remove any…

1. Disconnect the supply line from the fuel filter housing. 2. Make a test fuel line. • Use a 90° fuel line male fitting and…

1. Remove fuel pump supply line. 1. Fuel line 2. Sleeve seal 3. Clear plastic tube 4. Clamp 2. Make a test fuel line. •…

NOTE: If directed to this procedure from “Hard Start and No Start Diagnostics” section, go to “Alternate Fuel Source Supply to Fuel Pump” (page 106)…