I bought my truck back in May 2012 having no prior diesel experience. The craigslist ad the guy had said that Scheid had bored the pump out "10 over." After driving the truck for a short time, I started to realize that it hazes almost constantly, regardless of how much or how little I am on the throttle. I took the truck to Thoroughbred Diesel and the only real response I got to the boring over was "that's a very large bore" and nothing really else that would help me fix the problem other than telling me to get different injectors and fuel pin/spring. To add to the problem, my fuel economy is terrible. I have some friends who get between 21-25mpg unloaded in their first gens while I'm struggling to even get 19 unloaded (about 18.6 average).

Since I know that pump has already been tweaked, all I want to do is try to restore it as close to "factory" as possible. I understand the "smoke screw" on top of the AFC housing should clear up some of the haze at idle and low-throttle. I just want to know about how much the screw needs to be turned to clear up the haze.

Whenever I get about 50% throttle under about 10-15psi of boost, the truck smokes like a train. So I'm also wanting to know how to clear some of that up while lowering EGTs. I plan on installing an HX-35 or somehow fabricate an HE351VGT and install it within the near future, and I know both of which will clear up some of the smoking.

If anyone knows of any place I can find the "factory" settings for all of the adjustments on the pump, that would be great. I just need some help while I'm still learning this whole diesel thing Any helpful replies are appreciated!

 

First thing is you need to post this in the first gen section, our trucks in this section use the P7100 inline pump, the first gen guys come here as well, but you will get many more that can help you there.

PS Where are you located? We might have a member close who could lay eyes on it.

 

Northern Kentucky. And sorry about the misplaced thread, I thought I was in the first gen forum but now I see that I am not. Thanks for the heads up!