Craftsman CM2.12 Operation Manual page 39

Problem Probable cause
10. • Poor or polluted fuel quality
Excessive fuel consumpti-
on of engine • Defective injector / injection pump
• Incorrect injection moment
• Excessive wear and tear of cylinder / piston
• Insufficient supply of combustion air
11. • Oil level too high
• Excessive inclination angle of the engine
Blue smoke coming out of • Leaking oil seal of the turbo compressor
the exhaust (when idling)
12. • Defecte turbocompressor
Black smoke coming out of • Insuffient supply of combustion air
the exhaust (under load) • Leakage in air intake manifold
• Defective injector / injection pump
• Incorrect injection moment
• Incorrect valve clearance
• Excessive wear and tear of cylinder / piston
• Engine overheated, does not reach maximum rpm
13. • Air inclusion in the fuel system
• Defective injector / injection pump
Engine produces white • Water in the fuel system
smoke from the exhaust (at • Defective pre-heating plugs
full load) • Incorrect valve clearance
• Incorrect injection moment
• Poor fuel quality or polluted fuel
• Condensation of vapour in the exhaust system, on account of very low
craftsman marine diesel engines CM2.12 , cm2.16 / cm3.27
ambient temperature
Problems and solutions 14
Solution
• Check fuel quality. Drain fuel tank and rinse it
well. Fill with good quality fuel
• Check and replace if necessary
• Check / adjust
• Check compression, overhaul engine if
necessary
• Check the air intake and the ventilation
openings in the engine room
• Lower oil level
• Check / adjust alignment of engine
• Check / replace
• Check air intake as well as the ventilation
openings in the engine room
• Check/ replace
• Check/ replace
• Check and replace when necessary
• Check/readjust
• Readjust
• Check compression, overhaul the engine if
needed.
• Check the dimensions (diameter and pitch) of
the propeller and replace the propeller if
necessary.
• Check / bleed the system
• Check / replace if necessary
• Check / replace water separator / fuel filter
• Check / replace
• Check / adjust
• Check / adjust
• Check fuel quality. Drain fuel tank and rinse it
well. Fill with good quality fuel
• No problem, no danger
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