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114
9 Troubleshooting
Fault finding table
11 Black exhaust smoke (idling)
Possible fault
Remedy
Injector fault
Check /replace.
Oil level too high.
Lower level.
Excessive inclination of en-
gine.
Check / Adjust.
12 Blue exhaust smoke (idling)
Possible fault
Remedy
Oil level too high.
Lower level.
Leaking from turbo compres-
sor oil seal.
Check / replace oil seal.
13 Black exhaust smoke (at load)
Possible fault
Remedy
Faulty injector / injection
pump.
Check / replace if required.
Incorrect injection timing.
Check / adjust.
Oil level incorrect.
Check .
Insufficient intake air, air filter
dirty.
Check/clean the filter .
Leak in inlet manifold.
Check / replace.
Intercooler dirty.
Check/clean.
Incorrect valve clearance.
Adjust.
Excessive wear of cylinder /
piston.
Check compression; refurbish
engine.
Faulty turbo compressor.
Check / replace.
VGT Turbocharger actuator
blocked
Unblock /replace
Engine overloaded, max. rpm
is not reached.
Check sizes of propeller.
Engine overloaded.
Check size of propeller.
Summary of Contents for DT4.70
Page 1: ...Operation manual DT4 70 DTA4 85 ...
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