Am out of ideas. I have replaced the carb with one from Amazon. Spark tester shows spark but i replaced magneto and plug anyway. Still wont start. Have tried disconnecting the filter intake pipe and spraying starter fluid directly into carb through choke plate in various pisitions from closed to open. Does not even make so much as a single "pop". Its definitely still got normal compression judging by the pull force needed. I changed carb again just in case i got a bad one. Still no start. Even if the carb was not feeding any fuel mixture into combustion chamber, how is it possible that starter fluid into it still results in no fire at all?