I pulled out my plane to fly today and the engine was not right. I finally got it started and it was like the throttle servo was not working it would run for about 1 minute then cut off. It was running at just above idle, so I pulled the cowl off and started it back up. The throttle worked,and the carb flap was working on the inside, but it was still acting like it was not working. The last time I flew it, it was fine about 2 months ago. Anyone out there have any ideas as to what it may be? The engine is about a year and a half old and has had about 10 gallons of fuel through it. No crashes or anything that I can think I did to it.