Well if you have a cyl #5 misfire, well #5 cyl is probably misfiring. When you had your tune-up done, were the plugs AND the ignition wires changed. Alof of times when the plugs only are changed, you end up with plugs that crack early into there life.
I would have the plugs checked for cracking and let us know.
Cosmo. Mazda TEch
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Thursday, January 18th, 2007 AT 8:23 PM