66cc motor glowing spark plug

GoldenMotor.com

Larry Trotter

Well-Known Member
Nov 26, 2017
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Totally amazing that it can get that hot and not melt the aluminum head.
I would guess it’s cracked internally or it’s not tight enough to transfer the heat to the head, but i think that’s a stretch. Hope he isn’t in jail so we find out what it was. Haha