9 Troubleshooting

10 Fuel consumption excessive

Possible fault

Remedy

Faulty injector/injector pump. Check, replace if necessary. Incorrect fuel quality or dirty fuel. Check fuel. Drain and rinse fuel tank. Replace with new fuel. Fuel leaks . Check and repair. Incorrect injection timing. Check / adjust. Insufficient air intake. Check. Excessive wear of cylinder / piston. Check compression; refurbish engine.

Fault finding table

11 Black exhaust smoke (idling)

Possible fault Injector fault

Remedy

Check /replace. Oil level too high. Lower level. Excessive inclination of engine. Check / Adjust.

12 Blue exhaust smoke (idling)

Possible fault

Oil level too high.

Remedy

Lower level.

9 Troubleshooting

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 propeller -boat hull, excessive load on-board. Check /clean.

Fault finding table

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 contaminated 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 condenses as a result of very low ambient temperature.

9 Troubleshooting

15 Burnt oil trace in exhaust line .

Possible fault

Oil level too high . Excessive wear of cylinder / piston, piston rings.

Remedy

Lower level. Check compression; refurbish engine.

Fault finding table