Hi,
DC COBRA may on the right track and esay to check. Another thought from a pilots point of view. Every time I fly the first thing I do on pre-flight check is draw gas from the fuel tanks. Every plane is equipped for this with a release valves at the low point of the fuel tanks. If a plane is left to sit for even a short period of time moisture will accumulate in the fuel tanks and settle at the lowest point. If this is not drained off when it hits the carbs/injectors its bad news during take off. Engines stall, lose power or die. I have encountered moister/water in the fuel allmost every time I drain for pre-flight. Most of us do not drive our cars daily and store the for winter etc.so this might be something you want to check too. I'm sure your problem will be something simple and you will on the road with a smile.
Best of luck,
