1998 210,000 miles, 3.1.litre.
Always ran great. Replaced wires and plugs with delco 1 year ago.
Recently started missing at almost all speeds including idle.
Is it possible if finding a no spark on a spark plug to use a different plug and wire to confirm it is a problem coil?
Does a dirty injector have the same feel?
What would you guys do?
Thanks for any advice.