I have a very dodgy flatspot i've got a 350 holley and my brother put some new jets (smaller size jets) in it on the weekend its ran fine all week and then last night when i was going to put some fuel in (it was nearly empty could it be suxing shit into the petrol filter?) it just started to jerk and jump around every time i even touch the accelarator if i put my foot flat to the floor it will go but you can still here the flatspots
i've booked it in at this carbie shop but is there anything i can try?