Anyone have a pic of the inside top of a 6.2 injection pump?

[Mogman]

.. after over 50 miles it started acting up again.

Started up fine, idled for 15 minutes to warm up.. got about four blocks down the road and got chuggy then died. Cranked like it was outta fuel, I stomped on the pedal a few times and it restarted, got about a block and it happened again. Repeated this process till I made it home. I pulled the fuel return check valve out and drilled it out so it’s open all the time just in case it was that front solenoid that was giving me issues.. same situation.

Looks like a new (rebuilt) pump is in my future.

That does not sound like a typical IP issue, more like a plugged return or fuel starvation.(although I am not always right!)
Did you pop the fuel cap off to see if it had built a vacuum?

 

[Humpty]

That does not sound like a typical IP issue, more like a plugged return or fuel starvation.(although I am not always right!)
Did you pop the fuel cap off to see if it had built a vacuum?

Yeah, I took the fuel cap off... still did it with the fuel cap off.

I'm going to pick up a fuel pressure gauge from Harbor Freight tomorrow.. i wonder if I can hook the gauge up with a T to monitor the pressure while the truck is running.

I ran it today and immediately after it died I popped the fuel line off the filter and fuel blasted out so there was for sure pressure in the line from the IP to the fuel filter. I opened the top of the IP and it was full of fuel.. I removed the fuel return line from the top of the IP and cranked it over and it flooded the valley with diesel fuel as it shot out of the top of the IP so it's for sure getting fuel to the pump... maybe it's not getting enough pressure? The mechanical lift pump is 100% squirting fuel with every rotation of the engine.

I read in one quasi related thread that there should be about 6psi out of the filter to the IP. I planned on checking that tomorrow to rule out a fuel delivery issue before I ordered the rebuilt pump on Monday.