i picked up an 82 bronco it had been sitting for about 3 years. when i got home i threw some racing fuel on the tank an a bit on the carb and it cranked perfectly changed the clutch on it put it together and now it dosent wanna stay on. it cranked once it stood on for a bit then turned off. I tried it a few more times but nothing. it didnt wanna start back up. what do yah think?