CaptainMike
Well-Known Member
Yes, the full name for it is connecting rod and it connects the piston to the crankshaft. There are several things that can go wrong with any of the moving parts, but no one can simply divine that by intuition without at least pulling the head and oil pan, I don't care what Master Diesel guru title one has. That actually sounds lazy to me, or more likely the dealer mechanic isn't paid enough for diagnosing the problem correctly. He is well paid to replace a whole engine rather than to repair it in frame. It's a crappy game for dealer mechanics, but each job they do is for a set price, piecework if you will, so their incentive is to try and get the most value for their time. Anyhoo, here's a nice shot of a piston assembly: