Nine different diesels here and they all do that to some extent depending on how cold it is outside.
Many things you can contribute it to;
-worn rings
-weak or leaking injector
-low compression
-valve guides or seals
-valve adjustment
-timing
-air restriction
-bad glow plug
-head gaskets
-intake gaskets
-turbo seals
-engine not getting warm when used or idling for long periods can load up the muffler with fuel (slobering/wet stack)
-the list goes on ....
As long as it clears up after warming up and then runs good I don't get too worried about it.
White smoke can be coolant, it can also be excess fuel in a cold engine.
Blue smoke can be oil, at times it can also be fuel.
Black smoke can be fuel, it can also be lack of air.
Smoke from water or coolant tends to dissipate rapidly.
Smoke from fuel dissipates a little quicker, smell is usually quite pronounced, if real heavy it will even give you a burn your eyes feeling.
Smoke from oil tends to linger the longest and the smell is distinct if there is enough of it burning off.
In your case with it giving you some popping sounds my first guess would be an injector is leaking down when parked overnight.
By morning there is a small amount of fuel in that cylinder that will smoke off at start up until the pump can build pressure back up in that line, when that happens it once again can produce a good spray from that injector and that cylinder runs normal with no more popping.
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Today's Featured Article - Picking Corn - by Rick Nikolich. It was the day before Christmas shutdown at work and I asked our lead engineering expert Scott Andrzejewski what he was going to do over the holidays. He said that he had some corn that he still needed to pick with an antique one-row New Idea corn picker. Scott has a nice farm about an hour north of Lansing in St. Johns, MI. He wanted to get the rest of his corn in by the next day (Christmas Eve). We had about an inch of new snow on the ground and single digit temperatures. So in the bac
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