DaveL485
Staff member
I swapped it from cyl 4 to 3, the fault followed the rod/shells.try all combos, and you'll pin it down to the crankpin or rod.
I swapped out the shells and it was the same, indicating an issue with the cap/rod.
I super-cleaned the cap/rod seats with abrasives and it improved, suggesting the cap/rod is squeezing the bearing too hard on to the crankpin. Maybe i'll take it out and do that again a bit more. I just don't get why that would happen unless the shop that fitted the pistons to the rod have damaged the rod or cap on that end.