Sam I am asked the same question you did about how combustion could take place in the crankcase. Not sure why he deleted it.
I had noticed just as posting we had asked same exact question, thought, why ask same thing twice? and deleted it.....apologies if I confused the issue.
Seems though, as I think about it more, that's a lot of sneezing going on to roast those connectors......hmmmm. I don't know his engine thou but, doesn't his engine share the same carb. for all three cylinders? And if it was the lean carb. problem causing it, wouldn't/shouldn't all three cylinder be sneezing?
If they should be then based on that logic, and to confirm that was in fact the case, then perhaps looking at the other two holes somehow to see if their sneezing away would in fact point back to the carb. as the issue....
Also thinking "what if" that hole every once in a while had a false trigger? Due to like a flaky pick-up, trigger coil, switch box booger, loose johnson rod, whatever but, when it false triggered, the plug of course fired and the piston, as ondarvr said in the sneezing situation, the piston was at such a point in its stroke, the fuel in the lower side was opened just enough via the cylinder wall porting, it gets ignited?
Just thinking out loud and perhaps both above thoughts can be simply and cheaply either eliminated or confirmed before a major rebuild.
Off to Krispy Kreme's...I think the light just came on!!!
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