JD 265-Kawasaki FD540 17HP engine problems
After this engine works around an hour mowing grass and is well warmed up,it starts sputtering and missing and lacking power and there is a rich gassy odor in the exhaust. If the transmission is put in neutral, it will slowly pick up speed and then start running OK but it soon goes back into this sputtering condition again after starting to mow. I have thoroughly cleaned out the carburetor 3 times, replaced the fuel filter, replaced the air filter, blowed out the fuel line into the tank and the same thing keeps happening. I am beginning to believe that there was nothing wrong with the carburetor to begin with. I am wondering if maybe it was just an overheating problem. Earlier this year I had put a new coil and igniter on it and it really made it start much better so I am doubtful if it is either of these parts. Does anyone have any other ideas what I might be missing?