So I checked the injectors they are all in working order. I took the plate out and i have no smoke(dont wanna fog the city just testing to see if its working correctly) So I plan on puting clear tubing in the return line somewhere to see if there is air in the system. What are the chances my lift pump is baked and the p pump is doing all the work? Could the DV's have a role in this?? It does misfire around 1000-1200 and minus doing fuel pressure test I'm just hoping its not the pump I have no money for it.

 

the p pump needs pressure to work it will not draw fuel from the tank with out a lift pump. check your fuel filter

 

Ok well its not the lift pump then cuz the truck runs and drive it just wont soot (again not my intention. Just for testing purposes). And having the fuel plate out I should have soot and noticeable power increase of the 100 plate which I dont

 

Check your fuel pressure

 

I had the same exact problem just havent had time to check fuel pressure either, thing that sucks is it could be a number of things. OFV, lift pump going bad, fuel leak, air leak. I got no air leaks, a fuel leak out of the fuel filter location which I cant seem to fix, and pulled the OFV and it looked good. Cleaned pre filter screen and the sock that goes into the tank. All injectors are firing, I cant seem to find the issue as well Maybe I should just buy a fuel pressure gauge and eliminate some things. if you find your problem let us know maybe it will fix mine to

 

The return line from your IP runs behind the fuel filter canister, there's a small section of rubber hose that likes to rupture. It's MAYBE 4" long and a real PITA to replace. Make sure it fuel grade hose you replace it with or you'll be doing it again very soon, diesel doesn't play nice with plain rubber.


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Is the AFC Functioning? If you only knew the number of customers that came in with low or no power claims and the afc was slid back or the reference line had a hole in it.
With that said, fuel pressure test will cost you one hour of labor in about any shop and it's a very simple and quick test. Why not have it done to rule it out.

 

i just cured my bad stumple by stretching the OFV spring. truck ran good but stumpled like crazy in P or N.

 

Thanks I'm working on the pressure test. And the only thing mine does is idle low (like a slight space between the needle and the bottom of the middle line on the tach(idk if its 500rpms because of the line above 0)) other then that it runs fine looses power around 2300ish maybe a little bit higher. A friend seems to think its the DVs so hes got some extra 191s laying around and we're gonna try that aswell.

 

of coarse it looses power there. its defueling. and turn that baby up, that is way to low for the idle.