The average marine diesel engine runs for 1,500 hours before needing a major overhaul. The average marine diesel engine will run for more than three times that long and log an average 5,000 hours under the same conditions.

The number of hours that a marine engine runs is very dependent on the amount and quality of maintenance over the years.

The typical diesel marine engine will run fine for the first 1,000 hours. It is at this point that the engine starts to exhibit small problems. If these small problems aren't addressed, they can turn into major problems which may make the last 500 hours of life difficult to reach.

We are DEUTZ and HATZ engine specialists and we have a 24 hour field service. We do repairs and dyno testing and supply of new and good secondhand parts, s/e engines and components.

Two indicators that can alert you to potential trouble are the color of exhaust smoke and changes in the appearance of your oil when you check it. Exhaust gases from marine engines should be clear. Any color of smoke can warn you of potential trouble.

- Black smoke is the result of engine overload, a restricted air supply, or a malfunctioning fuel injector in the case of a diesel engine. Improperly burned particles of excess fuel are blown out the exhaust.

- Blue smoke is formed by combustion of the engine's own lubricating oil. This can be the result of worn piston rings, valve guides, or oil seals. The oil can come from an overfilled air filter in the case of a diesel engine or excess oil in the crankcase.

- White smoke indicates either water vapor from dirty fuel, a water leak into the cylinder or atomized, but completely unburned, fuel. Air in the fuel can also cause white smoke.

Contact Tefol today if your Marine Diesel Engine is demonstrating any of the above symptoms.

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