I don't know a whole bunch about engines so this may be a obvious problem. my LA 40 will only run for about 20 or 30 sec and then it dies it doesn't really matter what you do will the throttle or how you adjust the neddle it does the same thing rich and lean. here is the weird thing. I hooked up a different tank to the engine with out putting it in the plane and when we held the tank above the engine it would run a little better and as soon as you lowered the tank even close to the eninge it would slow and die. any ideas?
thanks