I have search the forum with no luck on the remidy of this. I have an 01 426 that I just picked up and it was running great. I repacked the muffler, cleaned out the carb and rejetted it for my location. After all of that it lost compression, I can crank it over with my hand. The compression release is not stuck open so I am at a loss. What have those of you done to get it running again? Also the valves were just checked/ adjusted by a shop about 4 months ago.