Picked up a 89 moto 4 250 for cheap a few years back from a friend that was moving. It ran and drove then, but wouldn't idle without quitting. Anyway, I pulled it out recently after it has been sitting to see if it would start with a new battery. It cranks but won't run. Fuel is getting to the carb from the fuel tank and I have good spark. If I pull the plug and pour a little gas in and replace the plug, it will run for a few seconds and quit. I figured it has to be carb related so I pulled the carb and have been inspecting it. There is some gunk in the bowl. The big jet looks ok, but I think the small one is completely clogged. I am guessing this would be enough for it not to start, correct? Am I on the right track? I like to dig into this kind of stuff but don't have much experience with small motors. Any suggestions would be appreciated. I did order a carb rebuild kit on ebay with new seals and rings for putting it back together too.