CM4.65 & CM4.80 - Craftsman Marine BV
CM4.65 & CM4.80 - Craftsman Marine BV
CM4.65 & CM4.80 - Craftsman Marine BV
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Problems and solutions<br />
11<br />
Problem<br />
10. Excessive fuel consumption of<br />
engine<br />
Probable cause<br />
• Poor or polluted fuel quality<br />
• Defective injector / injection pump<br />
• Incorrect injection moment<br />
• Excessive wear and tear of cylinder / piston<br />
• Insufficient supply of combustion air<br />
Solution<br />
• Check fuel quality. Drain fuel tank and rinse it well. Fill<br />
with good quality fuel<br />
• Check and replace if necessary<br />
• Check / adjust<br />
• Check compression, overhaul engine if necessary<br />
• Check the air intake and the ventilation openings in the<br />
engine room<br />
11. Blue smoke coming out of the<br />
exhaust (when idling)<br />
• Oil level too high<br />
• Excessive inclination angle of the engine<br />
• Leaking oil seal of the turbo compressor<br />
• Lower oil level<br />
• Check / adjust alignment of engine<br />
• Check / replace<br />
12. Black smoke coming out of the<br />
exhaust (under load)<br />
• Defecte turbocompressor<br />
• Insuffient supply of combustion air<br />
• Leakage in air intake manifold<br />
• Defective injector / injection pump<br />
• Incorrect injection moment<br />
• Incorrect valve clearance<br />
• Excessive wear and tear of cylinder / piston<br />
• Engine overheated, does not reach maximum rpm<br />
• Check air intake as well as the ventilation openings in<br />
the engine room<br />
• Check/ replace<br />
• Check/ replace<br />
• Check and replace when necessary<br />
• Check/readjust<br />
• Readjust<br />
• Check compression, overhaul the engine if needed<br />
• Check the dimensions (diameter and pitch) of the<br />
propeller and replace the propeller if necessary.<br />
13. Engine produces white smoke<br />
from the exhaust (at full load)<br />
• Air inclusion in the fuel system<br />
• Defective injector / injection pump<br />
• Water in the fuel system<br />
• Incorrect valve clearance<br />
• Incorrect injection moment<br />
• Poor fuel quality or polluted fuel<br />
• Condensation of vapour in the exhaust system, on<br />
account of very low ambient temperature<br />
• Check / bleed the system<br />
• Check / replace if necessary<br />
• Check / clean water separator / fuel filter<br />
• Check / adjust<br />
• Check / adjust<br />
• Check fuel quality. Drain fuel tank and rinse it well. Fill<br />
with good quality fuel<br />
• No problem, no danger<br />
Crafted with CRAFTSMAN MARINE<br />
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