I have a 2002 Mazda MPV with 133,000 miles. Two months ago, my mechanic replaced the ignition coil on cylinder 4 due to a misfire. Two weeks ago, he replaced the coil on cylinder 6 due to a misfire. Now this morning I'm getting a code for misfire on cylinder 5.
With each case of the misfire, the engine would run rough, and then the check engine light would flash. The light would sometimes go solid and the engine ran fine, but typically back to flashing when at idle.
Does it make sense to simply get the coil on cylinder 5 replaced? Or should I be looking for a bigger issue? After the first two failed, my mechanic seemed to think the rest could possibly fail too.