So i just bought a 98 suburban this weekend and the guy said it has set up for a year and needs crank kit. Haven't found crank kit but crankshaft assembly. He said it was run out of oil. So i get it home and put battery in it and it cranks fine. Runs a little rough but after sitting a year what wouldn't. It doesn't make any noises from the engine either. Would it be making noise if it needed crankshaft???