I am not a technical person but here goes : (this is a copy-paste job from answers.com

"Quote" Exhaust gases from a diesel engine should be colorless. Smoke of any color is a clue that it’s not running properly. Here’s what exhaust smoke tells you:

Black smoke is a sign of engine overload, a restricted air supply, or a malfunctioning injector. For some reason, excess unburned fuel is being blown out of the exhaust.

Blue smoke forms when the engine’s own lubricating oil is being burned. This can indicate worn piston rings, valve guides, or seals. The oil can also come from an air filter overfilled with oil or an excess of oil in the crankcase.

White smoke is a sign of water vapor or fuel that has been atomized but not burned. The water vapor may be present in the fuel or water may be leaking into the cylinder from the cooling system. Air in the fuel can also cause white smoke. "Unquote"

Golden opportunity not wasted.:-)
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But,is the quantum of smoke, an indicator to any defect in the Loco? Just curious!!!

For some unknown reason, it is listed as Khujraho in the NZ TT ever since it opened.

very nice....monsoon has arrived

What amazing surroundings!!Excellent snap!!

nice one Apu.

splendid ! 'dalimbo' is the oriya version of the same.

Superb

very nice....

Beautiful! Reminded me of the Makali viaduct...