. OPERATION TROUBLESHOOTING OPERATION TROUBLESHOOTING Problem Main causes Remedy Excessive oil consumption Oil leakage Excessive oil in oil pan ( Check, repair) Add oil to specified level. See CHECK BEFORE STARTING ( Replace) Replace with specified fuel ( Check, replace) Exhaust gas is white or bluish Worn piston, ring, cylinder liner Poor quality fuel being used Defective turbocharger Exhaust gas is black Clogged air cleaner element Clean or replace.
See WHEN REQUIRED ( Check, repair) See adjustment of clearance above ( Check, replace) ( Check, replace, repair) ( Check, adjust, repair) Worn piston, ring, cylinder liner Defective compression Defective turbocharger Defective exchaust brake Defective injector Engine hunts Air entering suction side of fuel line ( Repair place where air is leaking in) Combustion noise occasionally makes breathing sound Defective nozzle ( Replace nozzle) There is knocking (combustion or mechanical) Poor quality fuel being used Overheating Replace with specified fuel See "Indicator of engine coolant temperature gauge is in red range" above 3 - 140