Maybe you have already done this but start simple. In gas mode open drain on carb. Do you have good gas flow? When carb was off did the round plate on top with screw have a air gap? All pasages and jets clear? With the 2 piece choke shaft sometimes the inside shaft freezes up and it bends choke plate. Small passages for fuel air mixture end in big intake port above intake valve. If butterflies don"t close properly it will hurt the suction through small passages to carb. Only thing starting valves do when open is lower compression and open path for fuel mixture to spark plugs. Mixture goes into cylinder through intake valve. So if you have a good fuel flow from bottom of carb, good spark at correct time and runs good on diesel and no fuel mixture on plugs the problem is limited to. Air blockage from intake to carb, carb blockage fuel or air, intake passage block or leak to cylinder or starting valves not opening.
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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