Hello

im new to this .... I have a 1993 dodge ram 250 cummins turbo diesel with 101,000 miles it was running really good then it turned off and it would turn on again i bled all the fuel system it turned back on ran for a couple miles then it turned off again i have a feeling it is sucking up air in the fuel system i checked the fuel lines there not cracked ...what should i do next ??

 

Make sure the wire on the fuel shutoff solenoid is tight these have a habit of coming loose.
If you have access to an air compressor stuff a rag in the fuel filler and SLIGHTLY pressurize the fuel tank while someone looks for leaks. You can have a bad line that will suck air but not leak until you put some pressure to it. If you live where rust is a problem be sure to check the steel lines as well as the rubber. The fuel filter screws to a fuel heater and the o ring gaskets tend to leak when they get old so check there for leaks. that should give you a start.

 

thanks montana2x2 for the info

 

After a couple of inconvenient flame outs, I took the tab off the FSS, and soldered ring terminals on the feed line and the KSB line that go on that terminal, and screwed them down down directly to the valve.

 

if you don't think you're sucking air the first thing i'd do is change the fuel filter. only a few ways to kill these old girls, bad fuel is one of them

 

thanks everyone for the info

 

I changed the fuel filter and fuel transfer pump and it's still doing the same thing what should I do next ??

 

"It's still doing the same thing"… means cranking but not starting?
Or no crank?

Have you checked the FSS as previously suggested?

 

Cranking but not starting

 

Checked the FSS yet???

 

I'm going to check that next I know the previous owner put a wire to pull on it to shut it off

 

I think you are confusing the fuel shut off lever for the FSS, the lever is a purely mechanical shtutoff, the FSS does the same thing electrically.

Here is a picture, you want to make sure the connector is on tight and you have 12V there when it it trying to run.

 

Oh ok I'm going to check the fss

 

Ok I got it running I put a hose from Lift pump to a 5 gallon fuel tank bled the lines and it started right up and left it running for 30 min now I'm going to check the fuel lines that go from the lift pump to the gas tank and fuel level sending unit on gas tank for any cracks on the line or what do you guys think I should do ????

 

I would buy new lines and new clamps and re-do the old lines.
Cheap enough to do and should fix any leaks.