Alight everyone I started with a no start situation and had my injectors tested. They all tested bad and I was on a tight schedule so I bought stock reman units instead of sending them back to F1. Anyways I put the new injectors in and put everything back together. It started right up and idled fine so I pulled the truck outside and let it warm up before I drove it 4 miles home. I figured once the truck was warm I would drive it home and see if everything seemed good. About halfway home I could tell the truck was low on power. It almost seemed dead. When I came to the two stop signs on the way home it stalled both times and when I pulled it into the driveway my rpms wouldnt come down below 1000 rpms. So i took it back to the garage and checked all my electrical connections, cleared the codes and checked my liftpump pressure ( still stock pump on fuel canister) I had 8psi before cranking and it stayed there while idleing. I changed liftpumps just being curious and no change. With the truck warmed up it will start rite up and idle for about 30 seconds and then die. I have two codes- low voltage at liftpump and I did have an injection pump mechanical malfunction. It has not come back though. Im clueless at this point besides that I know its running out of fuel. I also removed the fuel canister and fuel tank and cleaned the whole system but everything seems like its put together correctly. Any help would be greatly appreciated. TIA Jordan

 

If by chance my supply line and return line are crossed at the fuel tank would it cause this issue?

 

the supply and return are 2 different sizes. the smaller of the 2 would not even clip on.

 

thanks cbrahs, Im gonna check them anyways when i get home because I have the dumbest luck

 

Did you replace the high pressure connector tubes that feed the injectors? I have had issues with re-using them and having lost power/no start issues.

 

Im using the original ones. I cleaned them out and looked them over and they and the o-rings looked good. It starts right up warm or cold but once the engine is warm or you drive it for a few mins it wont stay running or will stall.
Thanks for the input man.

Jordan

 

I think you need to focus on the codes thrown. Low voltage might mean loose connection. When the truck is stationary no issues but moving (think fuel sloshing) creates the problem. I know it is a PITA but rechecking the connections and mounts of the lift pump might help out. I had similar issues until I replaced the whole thing with an AirDog. Good luck!!

 

it still happens when the truck is parked and warm. The airdog has been on my list once i made sure the injectors were installed and all was running rite but so far that hasnt happened. Thanks