Marine diesel white smoke

With white smoke that quickly disappears after a couple of yards behind the boat , you’re most likely looking at steam. There are two possible sources to create steam in your marine diesel engine one is from coolant and the other is from the raw water drawn into your engine to cool the coolant. Technically, the white color is caused by the light-scattering characteristics of the re-condensed droplets of fuel (un-burned or partially burned) larger than one micron. Don’t restrict the exhaust, just attempt to coat your fingers with the smoke. Usually, white smoke indicates that the diesel fuel is not burning correctly.

Unburned diesel fuel will make its way through the exhaust completely unused. Be careful of white smoke as it will irritate your eyes and skin. Would you rather be cruising to a port like this or stuck at the dock with a diesel engine waiting on parts and repairs? Learn the causes of black, blue, or white smoke from an engine.

Adding a fuel cetane booster may temporarily alleviate-and identify-this problem. To be more specific, the white smoke you see is your diesel fuel , unburne or only partially burned. The commonest reasons for this lie in the fuel system.

They range from faulty fuel injectors to retarded fuel injectio n timing, or even low compression. Is white smoke a bad thing? Is there a sheen of oil in the water around the exhaust?

If the engine lacks power, if it has a lopey idle, if it does not make full rpms, then this is likely the engine. Also, if there is water in the fuel, the water will make some steam in the combustion chamber. This will give white smoke.

Steam can mean a few things. Some engines - notably Bukhs - do it all the time. Two causes of white smoke : (1) vaporized fuel that has not been burned and (2) steam from the exhaust system. If the white smoke is wispy and evaporates quickly it is likely steam.

White smoke can also be steam. If it hangs around it is probably unburned fuel. What causes white exhaust smoke , what causes an. It reflects that there has been misfiring in the cylinder.

Often you can tell the difference by smelling the white smoke to see if the smoke has a diesel smell or not. The most noticeable symptom of internal coolant leakage is when the white smoke is billowing out of the exhaust pipe and leaves a sweet odor in the air. As initially the vehicle is cold so it contains water vapour so whenever you starts the ignition the vehicle contains the water vapour and it’s emitted through the tail pipe with the burnt gases.

They smoked on start-up and for minutes after until broker shut them off. He says its normal for the Cummins mechanical diesels to emit white smoke until well warmed up. Is this true with your experience? Besides indicating incomplete combustion it could also be caused by scavenge fire or economizer fires. The procedure of identifying the machine which is at fault is complex as a number of exhaust pipes are present at the funnel.

In the case of engines comprising of a number of units it must be identified whether the. Normally, it would happen at startup in cold weather with lower compression engines and retarded timing. Perkins has a wealth of knowledge about diesel engines amassed through years of research, development and testing of its own models.