On my 95 buick park ave, I changed the spark plug, wireset, ignition control module, 3 ignition coil, EGR valve and Fuel filter. Before I did all of this I had a diagnostic check. As soon as I changed the spark plugs, the car started to miss when idling and driving. I followed the possible causes in the repair manual, it still does. Then once i did all of the above repairs it started back firing. I regaped the spark plugs agian and check to make sure that the wire were routed correctly and I...

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