Sorry to bring up a new thread, this might be a repete of another one I have not been able to find, I read as much as I could. The question is: Can a blown out seal on the crank (either the mag side or the clutch side) cause the engine to run only a little while then bog down from no compression? I have two engines that just stopped running. All electric is good, carb is good. One engine is barely running with the seal blown on the mag side (waiting for seal kit to arrive), the other w/bad seal on clutch side runs a little then dies out. Can it be dying from some fuel air mix in the case going to other than the cylinder?