Anyone know why my engine bucks and sputters? I did a search, but nothing useful. Just had the oil changed, new cap, rotor, plugs, wires, and fuel filter. The float bowls are at the right level. Idle mix screw it 2.5 turns out. I've run outta ideas. Anyone?

Thanks

 

Try adjusting the idle mix screw. 2.5 is just where to start. niether of my nikkis(stock and sterling) run too good at 2.5 turns out, you have to do some adjusting

 

could be a vacuum leak