mazda not starting?

i just bought this '93 b2200, and it was running fine on saturday, and i bought it on monday and drove it monday and tuesday, came home last night and parked it for like 5 min unloaded some metal, and went to crank it back up, and nothing. its carbureted, its getting fire on the plugs, so i poured gas into the carburetor incase it wasnt getting gas, still nothing. timing belt it intact. what else would make it not run when it was running fine?