Join Date: Oct 2007
Location: Phoenix, AZ
Thanked 48 Times in 47 Posts
iTrader Score: 0 reviews
Im not sure why we went immediately to wrist pin failures, bent rods, and failed bearings...
Did the engine overheat during your tip? Has it been overheated before?
If no, then there is a better chance than not the bottom end is fine.
First thing I would try is to figure out what hole it's coming from. I would start by figuring out if it's a fueling issue. Crack each injector one by one at idle and see if it goes away. If it does, swap that injector into another hole. If the knock moves you've found the bad injector. If the knock doesn't move then you know which cylinder it is and now you can perform some inspection of that cylinder, it's valve train, and possibly that barrel on the P7100.
I know you say the nozzle was replaced but a new nozzle does not equal a new injector. You injector guy could of missed something in the body that is the source of failure. Swapping holes will point to a bad injector if that's the case.
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91.0 D250 A727 w/ 216k on the clock. i/p replaced 20k ago, lift pump 2k, 1 turn fuel, 2 turns smoke, ground & polished AFC pin, timing bump, 366 spring 94 2500 4x4, 49k miles, Farrell Diesel rebuilt 215 pump, PDD 5x12 SAC, SXE 362, built 47RH