ford 6.9 fuel delivery problems

[ktowntodd]

Need Help!!!! I have a 84 Ford F350 with a 6.9 that seems to run out of fuel. It cranks up fine and idles fine but when I take off down the road, within a couple of miles it stall out. While trying to crank it back up I have pushed in the bleeder valve at the fuel filter housing and and get nothing but air to start with, then fuel finally comes thru and the motor starts runs a few more miles and stalls again. I have replaced the fuel filter, fuel pump and even dropped the fuel tank and flushed it out trying to elimate a contamiation issue. I have also blew out the lines with air. I am at the end of my rope. Any help or advise would be greatly appreciated. Ktowntodd.

 

[smoking89IDI]

Did you check fuel pressure at the valve? The lift pump could be bad, a healthy IP can pull fuel but it was not designed to.

 

[ktowntodd]

The lift pump that bolts to block below the vacuum pump was replaced today. The injector pump was replaced about 3 years ago and has about 25K miles on it. I have not checked the pressure at the bleeder valve and do not what it should be. Thanks, ktowntodd.

 

[smoking89IDI]

I think it has to be around 7-8 PSI (correct me if I am wrong guys). Look here at a previous thread, I did not read all the way through it though but it may help out. http://www.oilburners.net/forums/showthread.php?t=22290&highlight=stalls

 

[69dieselfreak]

did u replace both fuel filters there should be a water seperater filter on the drivers side bulk head firewall or did u check all ur fuel lines for leaks or hair line cracks sounds like ur sucking air and check for wet spots on all the lines

 

[whitehorse]

Do you have dual tanks? If so the vavle that changes the tanks from one to another is bad. Thats the same thing that happened to my truck! Tim