OPERATION 16.4.3 ENGINE ( ): Always contact your distributor when dealing with these items. In case of abnormalities or causes that are not listed below, please contact your distributor for repairs. WA450-3MC 2-97 Problem Main causes Remedy Engine oil pressure caution pilot lamp Engine oil pan oil level is low (sucking in air) Clogged air filter cartridge Defective tightening of oil pipe joint, oil leaks from damage parts Defective engine oil pressure sensor Add oil, See ? CHECK BEFORE STARTING on page ?-?. Replace cartridge, See ? WHEN REQUIRED on page ?-26. ( Check, repair) ( Replace sensor) Steam is emitted from the top part of the radiator (pressure valve).
Water temperature gauge is in the red range. Coolant temperature monitor lights up. Cooling water level low, water leakage Loose fan belt Dirt or scale accumulated in cooling system Clogged radiator fin or damaged fin Defective thermostat Loose radiator filler cap (high altitude operation) Defective water level sensor Add coolant, repair, See ? CHECK BEFORE STARTING on page ?-?. Adjust fan belt tension, See 24.6.2 CHECK TENSION OF DRIVE BELT on page ?-42. Change cooling water, clean inside of cooling system. Clean or repair, See 24.2.5 CLEAN THE RADIATOR FINS on page 3-31.
( Replace the thermostat) Tighten the cap or replace the packing ( Replace sensor) Water temperature gauge is in the white range on the left Defective thermostat Defective monitor ( Replace the thermostat) ( Replace) Engine does not start when starting motor is turned Lack of fuel Air in the fuel system Defective fuel injection pump or nozzle Starting motor cranks sluggishly Preheating pilot lamp does light up Defective compression Defective valve clearance Add fuel, Repair the place where the air is sucked in, See 24.7 EVERY 500 HOURS SERVICE on page 3-47. ( Replace pump or nozzle) See ELECTRICAL SYSTEM ( Adjust valve clearance)