I have tried pouring gas in both cylinders and it will fire on both but wont stay running. It's getting fuel to the carb, carb is clean float works needle opens and closes all air ways clean. Fuel pump diaphragm not torn. The electric choke is not working when pushed and when i turn the motor over its sucks alot of juice from the batteryand it is getting spark with key off. I did hook a tach up wonder if i wired the 3 wires wrong to the shift controls. Any help would greatly be appreciated.