i just bought a 99 600 f4, now after driving it for a few weeks its been stalling on me while im driving it, then it wont start back up, the motor will turn but not start when i do get it started its fine until i get around 70-80 it stalls over and over again each time and sometimes it gets worse, i just put in a new battery, could it be bad gas, plugs or carb?

thanks

 

i found out the problem, it was the jets, they where clogged with junk so i cleaned the whole carb and gas tank now it runs fine