black, grey and white smoke

I'm no professional in this area. It appears that white is typically more water vapor, grey seems to what I have seen as oil burning in gasoline engines, typically like oil blowing by worn rings. Black is most often seen in diesel, where combustion is not happening 'just right', so (apparently) the carbon is coming out as more 'metalic' carbon, rather than oxidized as CO2 or CO.

Now hopefully someone will correct me :)

black = no pope elected yet

white = pope elected

grey = pope on fire

grey / white smoke in diesels is unburnt fuel vapour caused by a leaky injector or worn delivery valves, black means that the person is using the accelerator as an on / off switch (used to drive a petrol-engined vehicle and has no patience) or possibly a faulty governor, some water vapour looks like white smoke but will clear as the engine and pipe warm up. you didn't ask about blue because that's pretty obvious.

or I could be completely wrong, I put down the spanners in 83.

what your engine type? gasoline or diesel and use your smell

in gasoline case :

usualy black and smell like oil burn ; oil burn in your cylinder engine mostly is many oil burn

grey and smell like oil burn ; oil burn in your cylinder engine but is not many

white and your have tears in your eyes ; you have problem with your carbulator

in diesel case :

black, grey ,and white can be a problem with your injector but if you have smell like oil burn your have problem oil burn in your cylinder

in gasoline case open your fire spark if you look many black corosif in spark poin usulaly you change many spark fire cause deat is oil burn in cylinder engine

The color, The smell, the taste.

How about reading your text books and really learn, other than asking for a quick answer with no understanding? By looking at all your questions ( all 11 of them )you appear to be a student with little desire to learn how to investigate, read and come to your own conclusions.

Please study and become great at what you do. Then you can come back here and help others with their problems.

This is Black smoke with black soot on the face of cm 11, from Charsley's motor cycle

black smoke = rich man using a lot of extra fuel

Grey smoke = driver has not gotten vecile warned up yet.

White smoke = the a leaking head gasket or crack head either way the driver needs a head doctor.

I agree with you dadw5boys GA

Add a little anti freeze to increase the white smoke!

I'll assume gasoline powered vehicle:

1. Black smoke: fuel related-overly rich fuel/air mixture (too much fuel, not enough air). Caused by a variety of sources; improperly adjusted carburetor, fuel injection problems, too much fuel pressure, incorrectly operating on board computer system, etc.

2. Grey: can be a black/white combination in some few cases (multiple problems;refer to black and white smoke cases); some "grey" is actually blue, which is excessive oil comsumption (bad rings, valve guides/seals, excessive engine wear, etc.). Could be white smoke slightly "tinged" grey; refer to white smoke case.

3. White smoke: coolant loss during combustion; leaking head gaskets, cracked engine components which are cracked to a water passage; coolant is heated and expelled with exhaust. Antifreeze in this case will often "tinge" white smoke "grey". Also gives off a sickly sweet smell at the exhaust.

Perform basic engine tests (compression, cylinder leakdown, running tests, computer/fuel supply and delivery, etc.) tests as needed to find source of problem.

Let us know what you find.

It seems to me that 74 is the closest to the truth. The following applies to diesel.

White= Coolant

Blue= Oil

Black or Grey Can meen several things and is usualy accompanied by other symptoms like power loss or hihg temps. Listed are only a few usualy seen with EMD medium speed engines;

Overfueling- Governor, or injectors

Low compression- Power assemblies

Air flow problem- Blower, Turbo, Aftercoolers, Turbo Screen.

High Exhaust Back Pressure

OVERLOADED ENGINE

Bad Timing

This is only the most common problems, if you gave some specific engine and application information we could help more.

Hell, that is easy, the difference is the color!

Black = Gas

Blue/Grey = Oil

"White" = vapor in exhaust = coolant leak somewhere. Not always critical failure, but usually.

PS. "White" could also be residual condensation in system as engine/exhaust is warming up on chiily morning.

OOPS, now I see its an automobile in question...

What would an exhaust gas analyser be used for

Someone who can not analyse the situation without one... But sure would be the quick fix!

It is very similar to the alternator. One produces electricity, one produces profits for unscrupulous repair facilities.

Released? Do you mean tailpipe? or the cars themselves burning?