mine did it a while back, check the spark plug holes. i know you think it's dried but check to make sure. i did it and it drove fine for a week or so and believe it or not it started doing the same as above. pulled plug wires and sockets were 1/3 full. stuck a rag in and worked around plug with a screwdriver. then pulled plugs and cleaned them. and yea dist. should be fine, the cap has an oring to seal it