2004 VStar 1100; Initial problem was bike starts then stops immediately. After trying Sea Foam, etc, pulled carbs and cleaned and rejetted (for upgraded exhaust). Rear main jet was completely clogged, seat was completely clogged also. Cleaned all seats, installed new jets, installed new parts from carb rebuild kit. Also replaced fuel filter and spark plugs. It started up great, but had fuel leak from fuel cutoff valve. Replaced valve and verified it works in both on/reserve. After sitting for a couple of weeks it went downhill fast. Now it will start for a few seconds then stop with full choke on. Intermittently it will start and can give it throttle, but when going back to idle stops immediately. When turning on initially, hear fuel pump run for about a second. The only improvement from before cleaning carbs is that rejetting cleared up popping when letting off throttle.