dana44· Premium Member
Location of production sounds kind of weird, didn't know they outsourced even aftermarket stuff there. Needless to say, if you are positive it isn't a missfire or bad injector, bent rod, anything else, then you wil have to pull the crank one more time and have it spun balanced. Five main bearings and a cradle usually maintain pretty good balance, but there are limitations if the crank isn't balanced, or one of the other things mentioned as part of the problem. You forgot to mention exact reason for replacing the crankshaft in the first place.