I just bought an 88 quadrunner 250 ond it would have trouble starting sometimes. I figured the carb needed cleaning. I cleaned the carb put it back together, drained all the bad gas out of the tank and put fresh gas in it. when i tried to start it all it would do is crank and not fire off. the carb is getting gas and there is spark. tried putting gas in motor and a little in the spark plug still no firing off. i took the valve cover off and turned the motor but from as far as i can tell neither valves is moving. unsure if the valves just froze or just need adjusting. It was running when i bought it a few days ago but he sayed it was hard to start some times which makes me think it had asticking valve problem. Any help would be appreciated thanks.
