RE: vulcan 1/8 nitro car problem
I find the fuel tank lid doesn't seal all that well. A leak keeps the tank from pressurizing when you operate the pull start and fuel is not drawn into the carburator. MAke sure lid is down tight and you might need a different o-ring. Try the plumbing section of the hardware store for one.
It may be as simple as you're not getting the fuel to the carb. Hold finger over the exhaust and pull the starter. YOu should see the fuel travel along the fuel line to the carb. Once it's at the carb, pull a few more times to prime the engine. Then attach glow-starter and try to start it.