yes it would rev up and thats why i took it to the shop. They said it was the reeds so they replaced them and said it ran fine. but.... it hasnt started since i got it from the shop. Yes i dumped the fuel out of the exhaust twice and cleaned carbs twice. I am going to rebuild the carbs this week and then go from there. The plugs are new and a compression check is on this weeks list also. ive put fresh fuel, cleaned carbs and air filter, key is on killswitch is on gas is flowing to carbs, plugs have spark.