Diesel engine misfire white smoke

What causes excessive white smoke from a diesel engine? What could make a diesel engine produce white smoke? Why does my diesel engine have white smoke? What does it mean when a diesel engine is blowing white smoke? In order to function properly, a diesel engine needs precise timing of the injector pump and high pressure.

So, any decrease in the pressure or delay in the fuel delivery to the combustion chamber will result in incomplete combustion, leading to white smoke. In many cases, white smoke emanating from the tailpipe (often at idle once the engine reached operating temperature) typically means a worn out injector. Now this isn’t always the case, but after some trouble shooting we’re usually the go-to shop when diesel drivers need refurbishe rebuilt, or new injectors. White smoke is usually unburnt fuel. The Cause Of The Smoke.

One common reason for this at low revs (but no white smoke at high revs) is dribbling injectors. White smoke occurs in a diesel engine when the diesel fuel goes through the engine and reaches the exhaust without having been burned. 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.

If white smoke occurs during a startup in freezing temperatures, then goes away, it usually indicates frozen deposits of soot which expanded around the rings then burned away once the engine warmed up. On the common rail Cummins, white smoke is more characteristic of an injector problem. If the exhaust smells almost like bug spray, it is. Diesel Engines Blowing White Smoke from Exhaust. WHITE SMOKE occurs when raw diesel comes through the exhaust completely intact and unburned.

Some causes of this include. Problems in this area will cause diesel engine starting problems, uneven running and white smoke when the engine is cold. Same goes for when asking for much power when the engine is cold. It has Started to misfire in the mornings (or when its cold) Also there is quite alot of white smoke.

After about minutes of idling or when it gets warm, the misfire stops and the smoke clears up. This is somewhat normal. My parents car has been smoking like a pig for the last few months, Diagnosis. Low compression (rings, head gasket, valves, head), poor timing (timing belt, poor timing belt fitting) and sticking injector(s) would all be culprits, as would a dead glow plug or two.

For big diesel engines this is big because it is not uncommon for these vehicles to be used for more than a half-million miles before retirement. Last week, just as I was thinking I had seen it all, a Ford F2was checked in that had a problem of Heavy White Smoke constantly emanating from the tailpipe at idle and worse as you increased RPM. And it continued to run hot, so I replaced the thermostat. Can anyone help me out? It would smoke like a train if you had a sticking injector.

Misfire on a diesel - possible cause?