The engine ran fine the day before but next day out it will not run at full throttle .It cranks and idles fine but when throttle is open to full setting it chokes down and quits.I checked the tank for leaks and there was no leaks.But i noticed that the tank did not have any presure in it like it usely does.the check valve works ok.
Ichecked the reglator gasket and it looks fine. what could be the problem. This is my first ys engine and i love it .
problem solved