I am not sure if it is good or not, but it sure looks cool when you see a Cummins romp on the throttle and a huge plum of black smoke come barreling out. Mine doesn't do it, but kinda wish it did.

 

Accelerating hard from an off-load condition, fuel is coming on before boost. The black smoke is partially burned diesel fuel - once the boost comes up, there's enough air (unless someone is grossly overfueled) to burn the diesel fuel more completely.

Factory ECM calibration and the small HY35W-9 turbo on the 3rd gen trucks is designed to prevent this from happening. Fueling comes on gradually to give boost a chance to follow closely in order to prevent/reduce visible smoke (particulate pollution in EPA jargon).

Rusty

 

Rusty is right on the money.

Short answer - unburned fuel.

 

I've seen a few places selling adjustable presure set ups for the wastegate actuator..... would say installing this in the cab and giving the *** a twist to open the wastegate at lower than factory settings trip up the system and produce the " desired " smoke? looked like a proportioner valve / regulator not sure but could this be a quick " fix " to the lack of being able to lay down a smoke screen? Sure would be a nice way to get rid of a few thousand unwanted mosquitos or better yet the ricer at the light!

 

my 03 cummins has startin smokin recently. not a lot but a little when i have it in neutral or park and i hit the gas a nice thin puff of black smoke comes out, im not complainin, im likin it... but could there be something wrong?

 

i LOVE to see smoke come out. I was pulling a 35 foot gooseneck with my step dads cummins. when i was parked i floored it just to see smoke come out. The truck didnt speed up quickly because its a 5000lbs trailer but it put a cloud of smoke so i let off at like 10mph. i was like YEAHHHHH

i hope the new truck i get will smoke. I dont like it smoking on the highway, but when at a dead stop next to some ricer, i want it to blow a LOT of smoke out

 

turbo wont spin fast in nuetral or park.

 

ahhh makes sense, thanks for clearing that up, im just a stupid college boy....

 

How do you make a 3rd gen pull and smoke like this???

http://www.bhaner.com/videos/k_falls5_04/bbd(large).wmv

http://www.diesel-central.com/Video/...igBadDodge.mpg

 

first link wont work, try it again or somthing???

 

first link

http://www.bhaner.com/videos/k_falls5_04/bbd(large).wmv

 

djp9747 Thats the stuff looks good win you driven.