On Tue, 17 Mar 2015 18:11:20 -0700, "Bob F"
wrote:

My '94 caravan started backfiring several months ago. Replacing the ignition
wires solved the problem.

Had an old Chevy with bad plug wires - cracked and brittle. During a
heavy rain, wet wire - that Chevy made a racket misfiring. Under the
hood was a light show.

Yeah. New wires help.