Why do i have a Misfire after putting in new alternator?

"Misfiring" After Installation of a New Alternator

Removal and replacement of an alternator should not causemisfiring of the engine.

Either this is a coincidence, OR whoever changed the alternator inadvertently damaged the ignition wiring system.

The "fix" for this problem is to have someone who knows what he/she is doing to fully troubleshoot the ignition system, identify the fault, and properly correct it.