What would cause the following. The car backfires pretty loudly three or four times and hesitates like it doesn't want to go, this normally happens when going up hill. Shortly after the service engine soon light comes on. When put on the diagnostic computer it shows the 7th cylinder is not firing. When we get under the hood the 7th plug is cracked, we've replaced the plugs and the coil but after about a week or so it just starts all over. What could be causing this?
have the same problem?
Friday, March 31st, 2006 AT 3:45 PM