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98
9 Troubleshooting
Fault finding table
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 .
Incorrect valve clearance.
Adjust.
Excessive wear of cylinder /
piston.
Check compression; refurbish
engine.
Engine overloaded, max. rpm is
not reached.
Check sizes of propeller.
Engine overloaded, dirty propel-
ler -boat hull, excessive load
on-board.
Check /clean.
14 White exhaust smoke (at full load)
Possible fault
Remedy
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.
Water in fuel system.
Check water separator.
Incorrect injection timing.
Check / adjust.
Faulty glow plugs.
Check / replace.
Incorrect valve clearance.
Adjust.
Vapour in exhaust gases con-
denses as a result of very low
ambient temperature.
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