loss of prime
 

I did some searching and did not find anything that really answered my question, so I am hoping that the knowledge base of this forum is better than my search skills.

I have had a repeating issue regarding my truck dying after shutting it off when hot. The only way to get it going again is to manually prime the fuel system at the filter. By my thinking, I have to have a air leak into the system that is allowing air to be sucked back into the system once it is shut off. I have changed the fuel filter and made sure it is seated, but this problem continues to crop up.

I have always been able to get the truck running again, but having to prime the system everytime is getting really old, and my wife obviously refuses to drive the truck.

Any help would be greatly appreciated.

Am I really the only one that is having this kind of issue, or have I just not described my problem clearly enough for others to understand and be able to offer me some insight of what may be going on?

is it hot restarts you are having problems with or it doesn't matter what temp the engine is at?

It is only after the truck has been running and up to operating temperature. It will generally start up but die withing 5-10 seconds after starting.

Once I go through and manually prime the system again (at the fuel filter housing) it will generally start right back up, sometimes it takes a couple of tries.

Once it is running and as long as I do not turn it off, it does not quit.

Again, I appreciate any and all ideas that anyone would have towards getting this issue resolved or at least giving me an idea what to start with.

i would check if you are leaking fuel past the pressure relief valve.

http://www.kennedydiesel.com/docs/Sh...Test%20etc.htm

also double check that there is no air leaks on the filter housing. the bleeder screw is a common source along with the primer bulb.

with the engine hot from just running, when it would normally have this problem, try priming it till the bulb is hard before attempting to restart it. if the engine starts and runs fine without dieing then it is likely an air leak in the fuel line.

I would look at a filter head rebuild, easy to do and the kit is cheap. On mine sometimes it wouldn't start, pump the primer a few times and ran fine. rebuilt the filter head and problem solved. I've added a lift pump since then. good luck

Lift pumps are great for preventing this. Ever since i installed mine i have never had a starting problem due to air leaks. Fast at priming after a filter change too.

Another good trick is the clear fuel line. It helps to see air bubbles and the source

Thanks for the replies. The fuel filter housing appears to have been the problem. Unfortunately, I was out of town when my wife needed to use the truck and it died on her. I just had it towed to the dealer and had them replace the filter housing. A little more expensive, but no more stranded wife and no problems since. Again, thanks for your insight.

Happy Wife= Happy Life! glad you got it fixed.:c: