it seems to be moving fuel. It filled up the primary filter quicker than before (has a clear cover).

I read somewhere a while back (before I started this thread) that there is a part that tends to fail almost right at 140k miles (this has nearly 141k). Would you happen to know what I'm talking about?

no idea what that might be?
there is no best before date on parts besides the injectors that would be around 140k KM's or 100k miles.

managed to get ahold of a friend and she said the IP has a tendency to fail around 150k miles from what she has seen and that it can be tested simply. Remove the plate off the top of the IP and if it runs, it's the IP.

Untrue,there are many factors that determine IP logevity-fuel quality,amount of time run without operational LP,adjustmets(turning up the pump) ect.

I think its safe to assume her basis was an untouched IP with low sulfur fuel. But regardless, it's a quick and simple test.

Today the truck wouldn't run even without the throttle being pressed. Recorded a few minutes of what the truck sounds like when it fires up for a second (was using the screwdriver and wrench to keep the throttle open when I cranked).


https://m.youtube.com/watch?v=Tt9PHKQt1nE&feature=youtu.be

From the amount of the video I watched it seems as though you have a massive air leak in the fuel system to me.

I would try getting some fuel line and connecting it to the lift pump on one end and into a separate fuel container containing diesel on the other and see if you can get it to run consitently.

Crack a fuel injector line loose to help bleed the air and carefully tighten the line once the engine runs.

If it solves the problem trace the source of the air leak.

Cracked the top plate off the IP and she idled. Problem was found. Will do some more research to find any other possible culprits that share the same test results.

thank you for the help you've provided for me. You've been a good source of information and helped me learn about these trucks. Thanks again

If removing the top plate helped I wonder if you have a restriction on the fuel return side?
that can also cause your symptoms?

Try running the fuel return line into another container straight from the IP?

Tried that before removing the plate. I figured that if it was a return blockage, then an open line should yield results. Tried firing it over 5 times. It acted the same. Then I cracked the plate and she was idling on first crank. I'm just glad I found the problem. Money comes and goes, but this now saves me hours of future diagnostic work.