Engine/Transmission (1998.5 - 2002) Transfer pump question(problem with truck)

[OutbackDiesel]

I am having a problem with my truck, it just developed today. I went to the store after driving about an hour around town and turned off the truck. I couldn't start it after that. It was like it had air in the lines. So, I bled it at the injection pump supply banjo fitting on top of the filter cansister. It started and ran sort of rough for about ten minutes until I got home. I turned it off and couldn't start it again. No bleeding helps. In fact I don't think I am getting any fuel to the filter. I changed the filter, and I have a gauge post filter which is not getting any reading. The funny thing is I can hear the transfer pump running each time I turn it over and listen. Do you think my pump is shot? Where else could this problem be coming from? I thought maybe there was a small hole between the tank and the pump, but I inspected the line and couldn't find anything. I am stumped. Any help you guys could offer is greatly appreciated... . Thanks in advance.

 

[Ron Bissett]

Sounds like the pump is shot , did you check for fuel in the tank? A fuel pressure guage is in order . The pump is under warrenty for 5 yrs or 100000 mi. Pump some times run but will not pump . Some pumps go out and then the injector pump sucks the fuel to keep running but it don't lube the pump as not enough fuel is present to cool and lube . Looks like a trip to the stealer is in order . LOL Ron Bissett in LOUISVILLE KY

 

[WyoJim]

There are two 1/8 inch plugs on top of your filter housing. Your post filter fuel gauge is probably in the one towards the engine. The one towards the fire wall is prefilter. Loosen it until it is wiggle loose then bump the starter for the 25 second fuel pump cycle. If it don't squirt out the loose fitting you probably need a new lift pump.



They are around $140 at your Cummins dealer. He will want your engine number which is on a plate on the front side of the engine under the injection pump. Takes about an hour to change the pump the first time.



Instructions are here



https://www.turbodieselregister.com/forums/showthread.php?s=&postid=459271#post459271

 

[OutbackDiesel]

Thanks for the replies, To the first, actually my truck is out of warranty now with 102500 miles. I may take it down to have them scan it. My friend thinks it may be the injection pump:{ . I hope not. I bought a new transfer pump at Cummins for 167 plus the new harness for about 8. I told them it should be around 145, but they just sort of laughed and asked me if I wanted it or not. So, under the circumstances being at their mercy, I bought it. I am going to install it tonight. Hopefully this is all the problem is. Thanks again.

 

[Cowboy Medic]

I just had my transfer pump replaced last week. I had driven it into the shed and it had been running perfectly smooth ever since we bought it 78000 miles earlier, drained the water fuel seperator and did oil change and all that, got done and it wouldn't start, pump would run but it wasn't pumping any fuel. Took it in and had transfer pump replaced and runs just like it is supposed to. Just so you know, the pump may be running but still not pumping any fuel. my bet is on the transfer pump