Table 2-1. Mechanical Troubleshooting (Con’t)TM 9-2320-289-34MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION18. WHITE SMOKE (AIR TEMPERATURE WARM)NOTEPerform step 1 if white smokes only appears during starting.Step 1.Check for inoperative glow plug module. (See TM 9-2320-289-20)Step 2.Check fuel injector pump timing, (See paragraph 3-44)WARNINGUse extreme caution to ensure that clothing or tools DO NOT get caught intruck’s operating drivebelts. Failure to follow this warning may result inserious injury to personnel or equipment damage.Step 3.Start engine, Depress bottom of rocker lever on right side of fuel injector pump,If engine sound doesn’t change, remove and inspect fuel injector pumpservo advance piston assembly. (See paragraph 3-40)Step 4.Test compression of each cylinder. (See paragraph 3-2)Step 5.Check timing chain free play. (See paragraph 3-1 1)19. EXCESSIVE BLACK SMOKEStep 1.Check fuel injector pump timing. (See paragraph 3-44)Step 2.Test each fuel injector nozzle. (See paragraph 3-36)Step 3.Test compression of each cylinder. (See paragraph 3-2)20. IDLES ROUGH ON COLD-STARTS BUT CLEARS UP AFTER WARM-UPStep 1.Check fuel injector pump timing. (See paragraph 3-44)Step 2.Test fuel injector pump, (See paragraph 3-44)2-17
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