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I recently purchased a Toro 20332, 2012 model, 7.25 190cc. It has an automatic choke.

It seems to start much better when cold. It starts and runs VERY GOOD. When I try to start again quickly, won't start.

I notice that there is some oil seeping out of the dipstick o ring. I am replacing that. Could this be the problem?
Thanks for any help.
Ed

Check to see if the choke is closed when trying to hot start the engine. If it is closed when your engine is hot, your auto choke is not working properly and will need to be replaced.