Hi guys, looking at a 97 Ram 2500 to use as a beater plow truck. Only has 110k, but as soon as I test drove it I could tell it wasn't banging on all 8 cylinders. Pulled plug wires one at a time and found the bad cylinder. Did a compression check on 4 cylinders and ranged from 160~200, but the bad one was only at 120.
Valves? Piston chunks busted from top of ring land (I've already seen that)?....Heads wouldn't be too bad I guess, but I don't feel like diving into the bottom end of a $500 dollar truck....your thoughts on common causes for low compression on these engines?