TheTruckOfTheseus
Newbie
I made a post regarding this truck a while ago and was not able to update it nor delete it so I’m making this one. It’s a 2000 K2500 with the 7.4, as the title states. I was having running issues and more recently, starting issues but most of it has been figured out. The previous owner didn’t reset the distributor after replacing it, so it was 14° off, causing rough idle and intermittent rough/ no start as well as a P1345 code. I took it to my mechanic and he was able to figure that out, but he is stumped with its misfire.
Cylinder 4 will not fire, although he said it’s getting good spark, the plug looks good, it’s getting good compression (155 PSI), good fuel injection, and that the valves were going up and down just fine. He used a bore scope and thinks he saw some marring on the head of the piston, but nothing definite. It was also throwing a P0174 code in case that’s helpful to y’all
He’s going to do more testing Monday (maybe a leakdown test) but as of now we’re both stumped. Wondering if y’all might have any ideas or maybe similar experiences?
Cylinder 4 will not fire, although he said it’s getting good spark, the plug looks good, it’s getting good compression (155 PSI), good fuel injection, and that the valves were going up and down just fine. He used a bore scope and thinks he saw some marring on the head of the piston, but nothing definite. It was also throwing a P0174 code in case that’s helpful to y’all
He’s going to do more testing Monday (maybe a leakdown test) but as of now we’re both stumped. Wondering if y’all might have any ideas or maybe similar experiences?