110
9 Troubleshooting
Fault finding table
5 Engine does not reach maximum rpm under load
Possible fault
Remedy
Fuel pre filter clogged .
Clean/replace.
Fuel filter clogged with water
and/or contamination.
Check or replace.
Clogged injectors
Check, replace if required.
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.
Incorrect injection timing.
Check / adjust.
Setting of stop valve incorrect. Check / adjust.
Oil level too high.
Lower level.
Lubricating oil incorrect SAE
spec or quality for ambient
temperature.
Replace.
Insufficient intake air.
Check.
Leak in inlet manifold.
Check / replace.
Intercooler dirty.
Check/clean.
Exhaust restricted.
Check / clean.
Incorrect valve clearance.
Adjust.
Transmission defect.
Check
5 Engine does not reach maximum rpm under load
Possible fault
Remedy
Turbocharger damaged .
Replace.
VGT turbocharger actuator
blocked .
Check unblock or replace.
Engine overloaded.
Check size of propeller.
Boat load inadequate.
-
Hull/propeller dirty.
Clean.
Summary of Contents for DT4.70
Page 1: ...Operation manual DT4 70 DTA4 85 ...
Page 2: ...ii ...
Page 141: ...139 ...
Page 142: ...140 ...