"I loosened the two nuts on top of the FI pump. Then I just pulled the line and the thing popped out with a little "shloop" noise. "


Here's the clue. If it's the 2 nuts that straddle the fuel injector pipe, that's territory where mortals fear to go. From what I have heard on this forum, loosening those fasteners puts that cylinder out of time with the other four.

Add any possible missing parts to the mix and you will get a lope at all engine RPMs.


It's time to pull the IP and take it to a Bosch rebuilder to get that part of the pump recalibrated.

__________________
Nate Stanley
(Currently Benzless)
1985 F-250 6.9l 170K
2009 SCION XB 36.5K
2003 LS430 78K
2012 Kubota B 2320