I got a motor off a guy that said it had been sitting for a few years. It starts after 10 or so pulls. But it doesn't open all the way up and I don't know why. Took the carb apart and checked it all and the spark plug is fine as far as I can tell. I'm running a 50:1 maybe a little heavy. When I run it in a bucket I notice a lot of black globs floating. The connecting rod to the carb works and moves the valve but it still won't idle all the way up. Brand new fuel lines and primer bulb. Older metal tank. 7.5 horse game fisher maybe late 80's