rough running, about to sputter out

I know, right?

I do not understand the fuel system on this truck. I don't know whether I was getting a vacuum or the opposite—too much pressure. I wish I'd had a fuel pressure gauge. I'd be way money ahead if I had one. I got one now.

In my searches, I did read that too high fuel pressure in the fuel rail could cause the injectors not to fire, that the ECM would read the high pressure and shut off the injectors.

 

Glad your truck will be ready to work.

Series 60 is a good engine. Mine is closing on 2 million with original bearings and never had the head off.

It still runs great after sitting for 5 years without turning.

Oil pressure is low, however. I'm fixing to replace the bearings. I started another topic asking for advice on torquing the mains.

 

I don't understand either, unless the return fuel causes a pressure buildup.

 

Maybe pressure builds up because return fuel spills into the tank hotter than the fuel that leaves the tank.

 

haha...

Noooo... I believe I'll leave well enough alone. At my age, I've learned to leave some mysteries to remain just that... mysteries!