5 Glow Plug Problems (and Solutions!)

Melted element from detonation. Identify and eliminate the cause of detonation (compression ratio is too high; nitromethane content in the fuel is too high; propeller load is too high; glow plug temperature rating is too high). Melted element from metal particles. Aluminum particles usually originate from the engine’s backplate, where they are scraped off by the end of the crankpin or connecting rod. This clearance problem can generally be corrected by installing a second backplate...