I have an MTD Yardman lawn tractor with a Briggs and Stratton 14.5 HP OHV engine. I had a float failure and ended up with a tank of gas inside the engine. Drained and cleaned. Changed float unit and connections. Changed oil. Changed some electrical connectors. Changed some electrical cables. Changed solenoid. Changed bushings in starter. - basically everything that had gotten gas in it. Put in gas shut off valve. Opened, cleaned and adjusted valves. New spark plug. New head gasket. Good compression. Tractor has run perfectly for the last 2 weeks but now won't start, it just cranks and tries to fire. Any idea of what's going on? Thanks
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