9-1
1. ENGINE SYSTEM
1. ENGINE SYSTEM
9 . TROUBLESHOOTING
9 . TROUBLESHOOTING
Trouble symptom
Oil pressure warning lamp
fails to go out.
Radiator pressure valve
spouts steam.
Water temp gauge indicates
red range, on right.
Water temp gauge indicates
red range, on left.
Engine fails to start.
Engine emits whitish or bluish
smoke.
Abnormal sound heard.
(Fuel combustion or mechani-
cal sound)
·
Poor quality of fuel.
·
Overheating
·
Muffler interior damaged.
·
Excessively large valve clearance.
·
Replace with specified fuel.
·
See Symptom "Radiator pressure val-
ve spouts steam".
·
Replace
·
Adjust clearance.
·
Excessive quantity of oil in oil pan.
·
Poor quality of fuel.
·
Reduce oil quantity.
·
Replace with specified fuel.
·
Lack of fuel.
·
Air mixed in fuel system.
·
Fuel injection pump or nozzle defec-
tive.
·
Starting motor rotates slowly.
·
Engine compression insufficient.
·
Valve clearance out of adjustment.
·
Refill fuel.
·
Bleed air.
·
Replace.
·
See " Electrical system."
·
Contact dealer
·
Adjust clearance
·
Thermostat faulty.
·
Water temperature gauge faulty.
·
Replace
·
Replace
·
Radiator fin clogged or fin damaged.
·
Thermostat or water temp gauge fau-
lty.
·
Radiator filler cap loosening.
·
Clean or repair.
·
Replace
·
Retighten cap or replace packing.
·
Lack of cooling water or water lea-
kage.
·
Loosen fan belt.
·
Dust and scale accumulated in cool-
ing system.
·
Add water or repair.
·
Adjust belt.
·
Change water and clean the interior
of cooling system.
·
Low oil level in oil pan.
·
Oil filter element clogged.
·
Loose or worn oil pipe joint leaks oil.
·
Add oil.
·
Replace element.
·
Check and repair.
Probable cause
Remedy