Originally Posted by MX240

TDC....Yes I hear what you are asking.
As the piston enters TDC it loses most of it compression that is enough that flipping the prop there is no carry through...it's dead at that point of rotation. No, the engine will not start. On the last flight I heard a change of sound and on throttling back it quite on landing. Never did that before.
I think I lost some of the cylinder wall plating (chrome??) at TDC? Remember I said above that I found a couple flat pieces of thin metal.
The engine is being boxed up and sent to someone that knows this stuff better then I.
I am afraid of what W8ye is telling me above. Not that much time on this engine.
Jim
PS...what makes me unhappy is I have two chain saws and a leaf blower that gets treated like crap and at least ten years old and never a problem with them using the same oil gas combination. This hobby stuff is something else!