OakhamMike
Member
I just got my TO30 going after years of being last on the list,started quickly,idled within seconds, 20 PSI oil pressure. It warmed up, thermostat opened and everything sounds good. I had my head shaved,new valves, guides,seals and seats touched up.I set the valves .015 cold and checked them a dozen times.The carburator was soaked,blown out and rebuilt. Carb set to factory spec.The only problem is when I rev it I'm getting an intermitant popping that I haven't been able to solve.It seemed to be starving for fuel but I couldn't adjust it out. I messed with timing to no effect.Reset the timing to spec. Removed bowl drain and had decent flow I thought. A test ride wont let me load the engine at all. I pulled the carb bowl and thought the level was wrong. After adjusting and starting it seemed better. Slowly throttling up,no popping. Took it for a test ride but the pop returned. When I got to the garage I started messing with the carb setting again and discovered that I can screw the air fuel mixture screw all the way in when machine is idling and it has no effect. Again,the tractor starts instantly and idles sweet. Clogged air fuel needle orafice effecting main jet setting? Thanks, Mike