I have a 1998.5 3500 5.9 Vin 6 24v CTD, have put in a remain VP44 from O'Reillys, a new lift pump that puts about about 16 psi WOT, DAP 100HP injectors, and have done a block test and still cannot manage to figure out why i have white smoke at WOT. It blows a puff of white on a cold morning but after reaching OT my programmer kicks on and it'll be black for a while then it seems as if randomly it'll turn white, then if i turn my programmer off it still smokes white. I have no idea from here. Any ideas? 

Air in the fuel will not cause this issue. A diesel engine can run as lean as you can get it where a gasoline engine cannot.

Your looking at a fuel or water issue causing white smoke. I remember water being the white smoke issue, however, that is with gasoline engines. I think diesel can belch a bit of white smoke but usually a rich mixture will be black.

 

On 1/16/2016 at 2:22 AM, JesseJames said:

Well I've been meaning to run s ok me new fuel lines for a long time because the ones that are on there aren't in good shape. Ill definitely see what they day before i decide on what to do though. 

Change the fuel lines 15 minutes after putting it back together, can't hurt.

WHITE SMOKE occurs when raw diesel comes through the exhaust completely intact and unburned.

 

Edited January 25, 20169 yr by eddielee

Diesel Auto Power responded today saying there was a bunch of debris in my injectors and they are testing today and are going to get me some answers tomorrow but have adjusted valve lash while waiting. Also I'm looking for a FASS if anyone knows where I can pick a good one up for cheap. I'm feeling pretty confident that it's an injector related problem at this point but I guess I won't know till I get it back together.