I am having a terrible time w/ my engine. It is the AE .15 that came on my RC10GT rtr+. I went to run it yesterday and it was a little rich at first so I leaned it out about 1/8th turn. It then ran fine for about 6 tanks of gas, cooling between every two tanks. Then all of a sudden it just started dying. It didn't lean out and die like it was hot and it started right back up after each time. It would run for about 30-50 feet and then just quit like it would if you put your finger on the flywheel. This happened no less than 12 times and it would idle fine and run fine before it died. I have all new fuel lines (I replaced those after you guys helped me troubleshoot my last engine woes just a couple of weeks ago). I had just checked my tank for air leaks, tightened the head, tightened the exhaust at the block, tightened the carb pinch bolt, all of the things that you guys told me to do and worked fine for a little while. It was moist yesterday when I ran and the track was kinda sticky wet but not muddy. I am thinking that maybe my gas had some moisture in it but I don't know how the engine would act if it did. The gas was the last bit in the gallon and it hadn't been used in a couple of weeks. I store it in a dark closet at room temp. Somebody help before I stomp this thing. The engine ran flawlessly for 3 gallons of fuel and has just started acting up every time I go and run.

Did you ever run it hot during those three gallons? Associateds run hot you really have to stay on top of the with a raytech gun or comparable . I think you might of lost your pinch when she gets good n warm. The cylinder expands with heat it might have enough compression to crank when you cool a little but looses it when heated up. Thats one thing to keep in mind after you have tried & checked every thing. Mine was always running hot even adjusting on the needle "Richining it up" that led to premature wear and the same thing your going throug. When it dies right away turn engine over chech for compression if it spins considerable with out much resistance , Start looking for a new engine. I ve had a bunch of OS Engines, 12 cvrs hold needle settings good not always chasing them with heat gun, they have almost 1 Hp. They are great for racing with . 12 & 15 cvx's are good sport engines with same reliability but not near the power of the cvr 's HOPE THIS HELPS THANKS