Just updating since I hate when these threads just stop before a success or giving up.
I’m still stumped.
Problem: no start or rare start. Will run for max five to ten minutes. Still there. Have to bleed the fuel system after it starts at the injectors.
2 PMDs used either or. Have seen both start it briefly. I am not using either remote harness I have. Both PMDs on heat sinks with pink pad.
replaced fuel lines front to back. Currently one smaller bubble in the clear return line. Tank sender looked newer. Replaced the sock with AC delco. Replaced the OPS (not ac delco).
2 new batteries with 700 cca.
When it stops running I crack a line and it looks like a no fuel situation but not entirely sure. Have to bleed the system every time it stops.
pump was replaced by a prior owner. Looks newer. Ground for pmd present on pump.
cleaned grounds and regrounded some (bad ground on back passenger from block to frame. This is replaced. New eyelet on PCM ground and regrounded. I get check engine light and all other lights in run position and crank position.
new oil change and filter (for fun)
Starter replaced by prior owner.
glow plug system a mess. Currently jumping terminals. There is no wait to start light. Going to see about cleaning up the wiring mess there today.
jumping lift pump manually To keep it running.
gutted the fuel shutoff selinoid because it wasn’t retracting in the run position.
cleaned/checked connectors at main harness. Looked good.
All fuses replaced under hood. Removed acccessories on back of fuse box. No blown fuses now.
If you still have to bleed the fuel system then you have an air in fuel issue somewhere that needs to be addressed.
Go through the ENTIRE fuel system from tank to Injection pump.
replace any rubber lines that need attention, look for any loose clamps, wet lines, weeps , etc...make sure the tank sock is not plugged,
Open your fuel cap. Do you hear a large "Whoosh" sound? if so, then you need to modifiy your fuel cap or replace it with a Diesel rated fuel cap.