Poulan P3314 chainsaw carburetor. Will start but will not continue running. No previous problems. I always empty the fuel, and then start the engine and let it run till it is out of fuel when I am done using it. It always starts easily and runs well until it sat unused for 2 years. Had been using premixed fuel for several years. I am thinking the carb is some how gunked up. Thinking about flushing the carburetor using a syringe and Everclear.