The truck must have been run at least 1/2gallon. I put in a new plug and while running the 2nd tank yesterday the truck stopped. Coming closer to it i could see smoke coming from the cooling head and the glow plug was gone. The glow plug's bottom was also black.

This leads me to think the engine is running way too lean however the HSN is 3 1/2 turns and the LSN is set to 2 turns. This doesnt make any sense to me, i cant check temps because i dont have a temp reader but when spitting on the cooling head, it starts to evaporate viciously once it touches the cooling head.

I'm completly confused...im running an OS LC3 plug. If anyone could please help because i cant think of whats happening?

Thanks