make sure your getting fuel from the tank, sometimes there has been a problem with a clogged tank, blow in the exhaust side of the tank and see if it comes out the fuel side fairly easily. put your settings at 3 out on the high needle and even with the collar at the low side. make sure the carb is open 1mm with the radio and car on, prime the carb before trying to start. change the plug if you havent a plug can glow and still not be good. make sure the head bolts are tight.

hope this helps you out a little.