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weird smoke problem with 6.2

Sticking injectors or air in the system. Time is what makes air worse. Sticking injectors are a source of 'air'. pop testing a set only costs ~$70.00
 
well, got pissed off at the truck, tonight I pulled the engine and tranny, hauling the truck to the scrapyard tommorow, Im gonna put this engine into a 1976 chevy 2 wheel drive shortbox to make my ECONIMIZER truck. still would like to fine out this smoking problem though...
 
dually man said:
If it was air then why would after glow of the glowplugs cause the engine to immediately run smooth?
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Engine is running on 7 of 8 cylinders driving the cold one. Then injection system is able to prime and start pushing fuel to the dead cylinder. The glow plug has cooled off from the airflow of a running engine and there is no longer enough heat to light the fuel. Addling glow plug heat starts the cyl firing. GM uses afterglow in case a cyl does go cold and start smoking.

Test injectors, all of them, then look for air leaks from the fuel filter, hoses, throttle shaft seal on IP etc.
 
OK, tonight I removed all the fuel injectors and tested the glow plugs by looking at them while powered up by the harness to eliminate a possable failed glow plug or wire. they all glowed fine and even.
 
Sounds like glow plugs buddy, my 6.2 did the same, then i replaced all the glow plugs, fuel filter, and oil change, and now its fine. its a easy thing to do and will save you in the end. best of luck!:biggrin:
 
85Chevyguy said:
Sounds like glow plugs buddy, my 6.2 did the same, then i replaced all the glow plugs, fuel filter, and oil change, and now its fine. its a easy thing to do and will save you in the end. best of luck!:biggrin:
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he said they all tested good. ??
 
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