Thr333_Arr0ws

I was kind of going down that same path, it makes a lot of sense. I'm about a week in with the new injectors now and she is running better than ever, it never actually stalls so no real driveability issues. I'll just keep monitoring for any changes and go from there. I appreciate all your input! -Sean

Hi Tractorman, great questions and I appreciate you asking them, hopefully the answers will help others to diagnose my problem The rev up and down twice is in quick succession, takes about two to three seconds to complete the rev up and rev down cycle before returning to normal idle, this happens every time I come to a stop and push in the clutch, it doesn't matter whether I keep it in gear or take it out of gear, the rev cycle persists. At idle, truck sits just a hair above 800rpm. I'm not sure about the previous injectors, they weren't Bosch, and the log has no mention of the injectors being done, but there's a 15 year gap from when truck was purchased to when the log was started so they may or may not have been done. The new injectors I believe are new regular injectors from Bosch that they "rebuild" to be the +75HP. The VP44 was new and came with a new PSG. Also, I replaced the lines from the fuel filter to the VP44 with some bigger half inch lines a while back when I upgraded to the Fass, fuel pressure sits at 17PSI when idling. I was very fortunate that the previous owner started the log book, thank you!

Good evening all, Huge fan of this forum, it's taught me a lot about working on my truck and I'm hoping I can get some help pinpointing a problem. I've got a 99 24V 4WD with an NV4500 5 spd manual transmission, about 325K miles, bought it about 4 years ago with 272K miles. Over the last weekend I replaced the injectors with some Bosch 75hp, I replaced the crossover tubes with new ones while I was in there, all with new o-rings and new copper washers, and I also adjusted the valves. Followed torque procedure when putting everything back together. Before this was done the truck was pretty sluggish with acceleration and building turbo pressure. Now she accelerates great and builds pressure no issues, but I'm experiencing what feels like a stalling or lope issue when I come to a stop and push the clutch in. Engine sounds like it revs down and then up and then down and then up again before returning to a normal idle. It didn't do this before replacing the injectors and tubes. VP44 is fairly new, maybe 20K miles on it, lift pump is a Fass. The previous owner kept a log of everything done to the truck since mid 2014, I've kept up that tradition. Is this normal after upgrading injectors, or is it something I need to diagnose and repair? Thanks!