Hi. I have a 90cc Kazuma Falcon with the EPA stuff on it. I can get it to run for about 30 seconds and then dies. Sometimes if I get it started and ride around the yard holding it wide open, it will stay running until you let off of the gas. To me it acts as if it is running out of fuel. It is getting spark. I've tried stator, cdi box, coil, ingition switch, 2 carburetors, and gas tank. Nothing affects. I have 2 of these, so I've been swaping parts trying to figure this out. The other one doesn't have the EPA stuff on it, but it runs great when swaping parts. The 4 wheeler was running when all of this started and the kids had been riding it about an hour when it shut off and it still doesn't run. Any help or ideas would be greatly appreciated. Thanks in advance.