flex fuel lines frame to motor

[melmount]

The 2 lines that go from the hard lines on the frame rail to the 2 lines off the motor, can you get new o rings for them? I recently pulled and redid my motor a bit. i had to remove the flex lines.(had the tool). Now it runs fine but once it has sat overnite, I start it up, it immediatly starts and runs for like 3 to 5 seconds then stumbles for few seconds. Not like idm wiring or anything, it acts like air in fuel lines. All lines on motor are good and new seals etc. The flex lines off the frame are original. I think they let in air when it sits a long time. I know they ae on the pressure side of things but i bet they still can let air in??
thx

[Zaairman]

You can't get O rings for em, I've tried. Gotta get new lines from the dealer. They're sold as a set, I think about $100.

[melmount]

even though these are on the push not suction side can air get in overnite?

[melmount]

bump..........

[sethc24]

could be air still in hpop lines etc. Or air in the fuel lines. I know when i pulled my motor and rebuilt a bunch of stuff, new o-rings, pan etc. The truck ran like a turd for about 300 km then it smoothed out.

[Zaairman]

I think it was CSIPSD who once said, you can either drive the truck softly and have it run like a turd for 100-200 miles, or run the crap out of it for 20 miles, and it'll be better. Give that a shot and see if you can't get the rest of the air out of the system.

[melmount]

I know how to get the air out, I just have to do iot every morning(i think) It stumbles for about 3 seconds afte its running for 5 seconds. Then its fine. I have a regulated return from riffraff diesel. It gets the air out. Buti tink he frontlines even though they are on the pressure side of things, let air in slightly. I am not sure what else can caue this.