James Espey DeLorean Motor Company Houston, Texas
281/568-9573 800/USA-DMC1 http://www.delorean.com
Have you checked for water in the plug holes or bad wires. I had the same problems with spluttering and small back fires with spark problems on cars that I leave parked outside. I have to blow the water out of the spark plug holes every now and then. John Hervey