Rustlers rule. I have some tips for you about them. Email me at [email protected]. Also, a glow plug is a coil that is heated by a glow ignitor that snaps on the top. The ignitor makes the coil inside glow red hot. When you pull the starter cord the gas is ignited by the heat of the glow plug. When the piston comes up, it primes the gas in a way that makes the glow plug ignite it and makes the gas expand pushing the piston back down. Phew... Hope that helps.

JAG