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Larry it does not matter where you test for pressure and vac since a two-stroke has the combustion chamber connected to the crankcase with transfer ports. It does not matter where the piston is either because the pressure and vac will travel past the rings through the end gaps. Testing through...

I realize that this procedure is not for everyone but I see enough talk about it here and I want to show you that doing a pressure and vacuum test is doable without all the high dollar tools I have, and I guarantee you that learning how to do it will greatly improve your service skills. Even a...