My bike runs now and I can drive it down the road for about a minute then it sounds like it runs out of gas and sputters... why is this? I am using a bottle with gas and gravity fed because the tank needs work. Is it just because it needs the tank on working properly or is it just a bad spark plug? anything helps.... thanks

 

What kind of bike is it?

Is your bottle vented? If it's not, it wont flow fuel to the carbs.

 

there are tons of variables. first, what kind of bike? what kind of petcock does the bike have?