Troubleshooting - Hyundai H740E Manual

TROUBLESHOOTING

X. TROUBLESHOOTING
1. START ENGINE DIFFICULTLY
TROUBLE
If still can't starting, have the engine to our authorized dealer for repairing.
CAUSE
There is no enough fuel in fuel
tank and fuel cock is closed.
clogged
Fuel cock is clogged
Improper or clogged main oil
Needle valve is not closed
properly or start hole is clogged.
Float is damaged or sticking.
There is water in fuel.
Too much fuel in engine
Wrong fuel brand
Too much carbon deposit and
dirt around electrodes.
Electrodes are burn damaged
seriously or insulators damaged.
Improper electrodes gap.
High –tension line is damaged.
Ignition coil is damaged.
Magneto loses magnetism.
Piston ring is worn to or even
over its wear limit
Piston ring is broken.
Piston ring is sticking.
Spark plug is not installed
tighten or without a gasket.
Air leakage between cylinder
block and cylinder head.
Air leakage in the valves
REMEDY
Fill fuel, open fuel cock.
Dredge air vent.
Readjust or clean, blow to get through.
Dismantle needle valve and repair, clean, blow to get
through.
Replace
Replace
Drain extra fuel, dry up spark plug electrodes.
Select proper fuel brand corresponding with the
requirements.
Clear away.
Replace spark plug.
Adjust to proper value.
Replace
Replace
Replace
Replace
Replace
Clear up carbon fouling.
Tighten with a gasket in.
by which cylinder block contacting with cylinder
head
Tighten cylinder head bolts in stipulated order to
stipulated torque.
Check valve. Clearance and tightness, repair if
necessary.
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