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1. ENGINE
This guide is not intended to cover every conditions, however many of the more common possibilities
are listed.
Trouble
Engine oil pressure lamp fails to go off
immediately after the engine is started.
Steam is emitted from the top part of the
radiator (the pressure valve).
Engine coolant temperature gauge indi-
cates red range.
Engine does not start when the starting
motor is turned over.
Exhaust gas is white or blue.
Exhaust gas occasionally turns black.
Combustion noise occasionally changes
to breathing sound.
Unusual combustion noise or mechani-
cal noise.
TROUBLESHOOTING GUIDE
Service
• Add the oil to the specified level.
• Replace the oil filter.
• Check oil leakage from the tube or the
joint.
• Supply the cooling water and check leak-
age.
• Adjust fan belt tension.
• Wash out inside of cooling system.
• Clean or repair the radiator fin.
• Check the thermostat.
• Check the engine coolant temperature
gauge.
• Tighten the radiator cap firmly or replace
the gasket of it.
• Add fuel.
• Repair where air is inhaled into fuel sys-
tem.
• Check the injection pump or the nozzle.
• In cold weather, check if fuel warmer sys-
tem is working normal.
• Check the valve clearance.
• Adjust to specified oil quantity.
• Replace with specified fuel.
• Clean or replace the air cleaner element.
• Check the nozzle.
• Check engine compression pressure.
• Check or replace the turbocharger.
• Check the nozzle.
• Check the injection pump.
• Check with specified fuel.
• Check overheating.
• Check the muffler.
• Adjust valve clearance.
7-1
Remark
Refer to the pages 4-3.
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