Originally Posted by cuda2k
A little more information may help. Derailleurs, what shifters, etc. I'd recommend picking up an SRAM PC-68 chain (or the PC-58 its a few bucks cheaper). I've got them on all of my bikes (6,7 & 8 speeds) and they work great. New chain is often a good place to start, but more information may help pinpoint other issues.
It has a Suntour Cyclone MK II rear derailleur, Suntour Superbe friction shifters, and Im using a Shimano 8 speed cassette. I was wondering if the spacing could be off ?