Quote:
Originally Posted by OldSchool81
Just saying, the fuel could be getting into the block through the rings causing causing similar problems the gentleman has described. This doesn't mean that the plug could be fouled if the fuel has a place to go. I have seen it dozens of times. Just food for thought.
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It cannot get in through the rings...the bore is over an inch above the carb on these engines. If the needle and seat in the carb malfunctions on a K-series single, the fuel takes the path of least resistance out of the air cleaner. The only way for gas to get into the crankcase on these engines would be past the intake valve guide, and there's no way very much (if any) could go that way because the easy way out for the gas in this situation is out the atmospheric vent and out of the air cleaner.