Smoke question

[Jgolden]

Minor question (I hope).



Returning from a 100mile trip, at the 75 mile point I had to go slowly down a pretty steep hill with a traffic light at the bottom. All brake no throttle. Stopped at the light, turned left and started up a hill. Throttle down.



The Controller of the Currency (my wife) who was following me, reports that a pretty good puff of smoke was put out by the rig when I started away from the light.



Normal?

Thanks any info. J Golden

 

[DValentine]

What color? Blue, gray, black? Do you have an AFC housing on that engine? How is it set up?


D

 

[JLEONARD]

I used to get a small puff of whiteish smoke on occasion after a certain long down hill I travelled often and turning to the right. It would quickly get overcome by the black smoke if I leaned on the go pedal.

I have no idea if the right turn had anything to do with it. I don't think it did.

I attributed it to very cold EGT/cylinder temps after the long hill and not being able to burn the sudden fuel dump into the cylinders. I would see EGT drop under 250F and approach 200F while coasting down that hill.

At least that is my theory.

 

[Jgolden]

Grey/white smoke Basic 89 issue VE pump. fuel turned up a bit or two.



Jay, It was a left turn, that could have been the problem. Right turns are prohibited in NY.

 

[PToombs]

Right turns are prohibited in NY.

Unless you are driving a UPS truck. They don't turn left. It must work, the company saved like 2 million gallons of fuel the 1st year they started it.



Joe, I don't think it's abnormal to get a puff like that under those conditions. I know I've puffed a few clouds in my day.

 

[Jgolden]

Joe, I don't think it's abnormal to get a puff like that under those conditions. I know I've puffed a few in my day.

Thanks Pete. ... ..... well ahhhh, nah.

 

[JLEONARD]

 I know I've puffed a few clouds in my day.

:-laf:-laf

You're talking from the truck, of course. But you never inhaled. :-laf:-laf

 

[PToombs]

Sure I did! Diesel smoke only causes cancer in lab rats in California. I'm not in California! :-laf

 

[Bob Beauchaine]

Mine only "puffs" black smoke when it gets tailgated - still haven't figured out how that happens



Bob

 

[JLEONARD]

Mine only "puffs" black smoke when it gets tailgated

Ahhh... ... . causing cancer in tailgate rats:-laf:-laf:-laf