Mech
thanks for the response. I’ll start from the beginning to help clarify what had happened. The quad ran great for along time. My son has been using the last year or so and he blew a tire maybe 4 months ago. It sat for about 2 months before I got around to changing the tire. When I started it up after changing the tire it started no problem but ran for about 1 minute then ran out of gas. Next day I put new gas in and it wouldn’t start. At that point I used starter fluid and it would run for 30 seconds or so. I figured maybe there was bad gas from sitting so I took off the carb cleaned it and put it back. I was able to start it drive it in 1st second gear but when I would get to 3rd gear or any incline it would fall on its face and die. I figured a fuel problem so I got a new carb not a Yamaha, changed the carb same problem. Got another carb not a Yamaha now won’t start. Checked for vacuum leak and o-rings they are good. I still think it’s a carb problem I think I need to get a Yamaha rebuild kit. I’m going to try that next.