Fuel pump drops its prime overnight on the D318 8T ... Now what did I do?
Ok I ran out of fuel the other night just as the engine started to warm up. Added fuel, ran pony, bled the injection lines (at the pump) diesel started and ran normal. Now every time I start it cold (overnight) I have to bleed the lines again. Now what did I do?
Fuel gauge is pegged once started so there is lots of pressure.  Gleaned the service manuals but did not see if the fuel filter housing need burped after running out of fuel. I did see the info on upper and lower bleeder valves. Once there is enough fuel to run the diesel dose the fuel housing still need to be bled? Or did I answer my own question? I figured one it started it would work out any air pockets.
I've checked and made sure the inj. lines that I cracked were tight. I did crack the top bleeder valve for a second but it was dark and I could not see anything. After the diesel started I made sure all line I cracked open were tightened.

my guess is that when you bled the system one of the bleeds is now allowing an air leak into the system after the engine is shut down and the fuel returns to the tank. i would use some penetrating oil or carb cleaner and open each bleeder and clean them out real good and try again. could be a fraction of rust on the valve seat

Ooo good idea .. I may have to gear up and go try that cus now I'm not going to be able to sleep tonight ... also ... that way I can check it out first thing in the morning.

That must be it ... it is too simple
Thanks a lot.

Ha ha ... went out there and a moose was hanging out just a little too close to work on the grader... I'll go back in a little bit and let it meander off. I'll grab some pics if it is still out there.

I'd be keeping a close watch on oil level in case fuel is winding up in the sump.

i think the moose got him?

I had the same problem on my 7T with 4600. turns out I hadn't got one of the bleed screws all the way tight after beading. FYI i like moose meat lol

mog5858 wrote:

I had the same problem on my 7T with 4600turns out I hadn't got one of the bleed screws all the way tight after beading. FYI i like moose meat lol
 

I love moose meat too but not Out of my yard. I watch them grow up and eat my garden. 😩 but we. Do live in Alaska. 
that’s part of it. 

It’s ideal ing so got to go play. But that was it and I apparently didn’t burp the upper filter housing well enough. 🙄😱🥶
THANKS SO MUCH EVERYONE you are helping me live my bucks list.
Dang it Siri "that is bucket list !!!
 

Yea you have you open the lower bleeder first then when clear fuel appears close and open the top one and do the same.