NHC- 250 Fuel injection Pump performance mods 1987 M936A1 Wrecker.

[rickpolak1]

Good morning, I have read vague posts about dialing in the fuel injection pumps for a bit better performance. Has anyone done this? I just purchased a brand new pump and looking to dial it in before installing. Are there any how to videos or is anyone willing to work on this pump? Any help is appreciated.

 

[simp5782]

#18 button and a rail pressure gauge install so you can monitor your adjustment. There is a thread in the 5 ton modification section. Should be fairly recent in the list