109
9 Troubleshooting
Fault finding table
3 Engine cranks but will not start, smoke from exhaust
Possible fault
Remedy
Faulty injector/injection pump. Check, replace if required.
Faulty injector/injection pump. Check, replace if required.
Air in fuel system.
Check and bleed.
Wrong fuel quality or contami-
nated fuel.
Check fuel. Drain and flush fuel
tank. Replace with new fuel.
Incorrect injection timing.
Check / adjust.
Setting of stop valve incorrect. Check / adjust.
Incorrect lube oil SAE class or
quality for ambient tempera-
ture.
Replace.
Faulty glow plugs.
Check / replace.
Insufficient intake air.
Check.
Intake air filter clogged .
Clean/replace
Incorrect valve clearance.
Adjust.
4 Engine starts but runs unevenly (rough idling) or
stalls
Possible fault
Remedy
(Nearly) Empty fuel tank.
Refill.
Fuel supply line restricted.
Check / clean.
Fuel filter clogged with water
and/or contamination.
Check or replace.
Vent line of fuel supply tank
clogged.
Check / clean.
Faulty injector/injection pump. Check, replace if required.
Leaking fuel supply line or fuel
injection line.
Check / replace.
Air in fuel system.
Check and bleed.
Wrong fuel quality or contami-
nated fuel.
Check fuel. Drain and flush fuel
tank. Replace with new fuel.
Low battery voltage
Recharge /replace
Exhaust restricted.
Check.
Incorrect valve clearance.
Adjust.
Idle setting too low.
Check/ adjust.
Summary of Contents for DT4.70
Page 1: ...Operation manual DT4 70 DTA4 85 ...
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