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Problem Solved! The new replacement fuel tank pickup was bad. I filled the tank all the way up and the problem went away. Somewhere on the lower third of the pickup there has to be a leak. Taking it in to the mechanic to get it replace and a few other minor things fixed up. :) Pretty happy that...

I found one fitting that had been installed backwards, the O-ring side of the fitting was connected to a flare fitting and the flare side was connected where the oring should be. It is running better but still getting air into the system. I have checked every other fitting I could find and they...

Ordered the part from the cat dealer, also going to double check for air leaks. If I can't get it sorted out this weekend I am going to take it to the Cat dealer since they are 5 miles away from me. I had a really good large diesel mechanic go over the fuel system and they found no leaks. I...

Read the fuel system section of the TM and now I know how to hand pump the fuel system to prime it. The problem I am having is that the engine is draining the fuel filter of fuel faster then the filter can be filled up. I can get the truck up to 40mph and then it has to idle for 5-10 minutes...

Problem isn't the filter. My truck ran great until the filter was sucked dry. Had to take the filter off and re prime it with diesel to get it to run again. I think the problem is the fuel pressure regulator or the governor/lift pump.

it is a 1994 3116. My father is a heavy diesel mechanic and he told me to change the fuel filter again. So I am going to replace the fuel filter and see if there is any improvement. After that I think I will remove the governor and check it out.

My truck has had all of the fuel lines replaced, the tank dropped and cleaned, new filters, new water fuel separator, and a new air vent line. The problem I am having is that I can run at WOT for a brief interval and then the engine stops reving and idles while the truck downshifts and slows...