OK so i messed with the pump on my truck a little today. First i took the collar off the fuel screw and turned the screw in about 3 turns. After that the truck started fine. Then i opened the top cover and took the "fuel pin" out and ground it just a little, and reinstalled. Now the truck will not start. It will turn over fine but will not start up. I even tried a little spray of starting fluid and it wouldnt start (i know i shoudlnt use starting fluid but i just wanted to see if that would help). I have broke loose all the injector lines at the injectors and they are getting fuel. They did seem to have air in the lines, so i bled them and it still will not start.

I need the get this truck on the road asap so any thoughts or suggestions on what i might have did wrong or anything that could possibly help will be gratly appreciated.

Oh yeah the truck is a '90 W250 4x4 auto, of course w/ the cummins, and all stock except for the mods i tried today

 

I think you knocked the wire off the shutoff solenoid.

 

i did the same thing and i did it more than once to beat it all. its prob what wannadiesel said. check your wires.

 

I hope wires are what it is.

With this question though... can one diagnose for sure that one or the other didn't cause the problem?

1. Fuel Screw

2. Fuel Pin.

Those are meaty details that I would like to hear.
How could it, why wouldn't it?

Best Regards
TRDunn

 

ill definatly check the wires and see if thats it. Thanks the help and ill post up this evening to update the statuson the truck.

 

the only way a fuel screw would afect the starting is if its out to far
and the pin wouldnt affect it
check the wires

 

Well i checked the wires this afternoon and bingo, i must have knocked the wire just below the fuel screw off and didnt notice it. Thanks for all the help guys.

 

Any good recommendations on removing the collar?

 

pull the screw out stick it in the vise and get a good pair of vise grips and lock them on and rip it off, dont worry about the treads to much but dont mess them up completly

 

my trucks screws were tack welded in two spots so I had to grind the welds off to screw the power screw in just be carefull to grind only the tack weld

 

mine was just crimped in three spots came off easy.

 

mine were welded on also i took a rotery file and ground them off