I have a 1988 Honda civic h/b dx 229800 miles 5 sp. I am having a rough idle and cutting out problem. The cutting out happens more at low speeds than high.Even at high speeds it cuts a little. I have checked my plug wires,plugs,changed my o2 sensor, and insured i'm getting fuel. I am stumped!! It almost feels like its dropped a cylinder or not getting enough spark. please help me if you can!