Vehicle had been having low idle issues. Used seafoam-no result, changed fuel filter-no result. While it was running I pulled a plug wire to try and isolate a possible faulty plug and/or wire issue. The first one I pulled the vehicle died and was unable to restart. I've changed the plugs/wires and distributor cap. Still cranks but no start. Plugs are getting spark. Did I trigger something that needs a reset? Any help is greatly appreciated.