ocnorb
IDIT
I sure hope it's was wasn't caused by the new Delo400 as that is what I just put in my '94!
I would send out the engine oil to blackstone and see what they find, for the fuel system issues would you happen to ever hear a hiss when you pull off the fuel caps? These fuel tanks dont vent well, and added pressure in the return lines will really screw with these pumps, but its not going to damage a head and rotor.
That’s an odd failure, typically it’s the back two that are the lowest and it gets better further forward. Interesting thing about cylinder and piston wear, is even if you shatter a piston like I did, the oil control ring keeps all the metal out of the pan, on the shop trucks idit that got hurt from a nitrous backfire it broke out the top two steel ring lands, both compression rings and big chunks of the piston. All that stayed out of the pan until I pulled the heads and popped the piston out, all the pieces that had stuck between the lip of the cylinder and the bottom ring went everywhere, engine ran like that for months with the rear pistons broken and didn’t have anything on the drain plug. #7 and #8 both had zero compression.Last 7.3 I killed, had 240-250 numbers in the middle 4 cyls, 320-375 on the outside 4. Lots of metal fuzz on drain plug and in filter. Bearings were perfect. Cyl walls not so much. Oval cyls don’t work well.
I've seen a spun bearing on a 6.9. Most likely from being run out of oil.I’ve now seen it only twice and both in idit engines,
I've seen a spun bearing on a 6.9. Most likely from being run out of oil.
Good thing I found out NOW!Wait, you're supposed to check the oil level??