Hello, how many hrs did you run the engine after the rebuild, the governor could still be the prob even if it was fine not long ago. but thats just what I think. I do not own any Tecumseh engines now, but I used to and I had the same prob. Changed gov and prob fixed. I personally do not like this brand because of the way the fuel system is set up, but some people love them, so I guess it is just personal preference.