RE: Sputtering Ram
If it is a carbureated(sp) model it might be the automatic choke. On the harley its like riding a buckin bronco if the choke **** accidently got pushed in. Sounds like a choke prob. Also on the older vehicle there is a shiny accordion heater hose that runs from a shroud on the exhaust manifold and goes to the aircleaner. There is generally a hockey puck looking thing with a vac line on it. This a valve that shuts off the warm air when the engine heats up. I have seen either a bad vac line (disconnected, cut, cracked) or the same with the hose from the exhaust create those probs.