do the obvius checks that the glow plug glows and the starter is charged people say check for air leaks but i have a car that works with an air leak so air leak isnt important if you are like me you just want to know it works even if it is acting funny as long as it runs just sort out the peformanc problems later now to test the engine i put 3 or 4 drops of nitro straigh in the carb and pull it should stert for a second but if it ran before this may be the kick it needs try this first make sure it is primmed also, i take off the tube that is on the exhaust and slowly blow down it till you see fuel hit the carb, also if you check the carb that fual is getting in blow on the pipe i spoke of the exhast end and look in the carb tiny bits of fuel should leak in but definatly try putting 3 or 4 dropps out of the fuel bottle in the carb and obviusly take off you air filter to see in the carb and were the air filter goes is were you put the fuel the pull will go stiff but just keep pulling unless its realy not going to fire then leave it tell me how it goes ill try and help.