Small Engines (Lawn Mowers, etc.): Tiller engine wont stay running, briggs stratton, carburator

Question
We have a Briggs $ Stratton tiller motor about 8 or 9 years old and we put it on a small go cart. We never had any problems with it it always ran perfect. Now when you try to start it it won't start unless you pour gas into to carb, and then will just die. Icleaned the tubes that suck up the gas from the tank to the carb and i have the same problem. What do you suggest?

Answer
 Hello Cory:

 The carburator Needs to be Soaked Overnight in Cleaning Solution. Then Blow All the Ports and Passages Out with Compressed Air. The Varnish that Gas Forms is Blocking the Ports and Passages Inside the Carburator. Hope this Helps.  Let me know what Happens, Please.

 Good Luck

 Respectfully

 John