1500 Wing, low miles, great shape. Last year I got gas and within a half of mile, the bike was running really bad. Dumped about a half of a can of Sea Foam in it and within five minutes, everything was great. Early this year, about half way through a tank of gas and it did the same thing. More Sea Foam and life was good. Last week, about a quarter way into a tank and the same thing. Put in about a third can of Sea Foam, nothing. Added another half can of foam and nothing. The 1500 Wing has to be the most pain to work on because everything is covered with plastic and all the bolts are hidden.
It starts right up but don't sound right (like it running on three cylinders) and idles real low and doesn't have any power. It doesn't pop, or stumble when you rev it. Seems to run better at the very end of the rev range. It feels and sounds just like it did the other two times when Sea Foam fixed it, why doesn't it fix it this time? Any thoughts before I rip into it? Thanks.