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Hey yall. Little update on what's going on. Car is still at the shop (all sorts of weird things going on over there, mostly due to poor management) but their speed tech is taking a look at it again next week. They suspect something is wrong with the electronics. What has been done since my last...

I'll take a look at re-gapping the plugs when I regain access to the car, but OEM plugs with a .003" gap difference in a spec car causing a progressive misfire just doesn't sound right, considering that the misfire began before even touching the plugs. Yeah, p0302 only code, never anything...

Sure, but the problem started before changing the plugs, and stayed on the same cylinder. The OEM plugs have worked just fine so far, might upgrade to .028 later, but I don't have them at my local part store. Got any other ideas?

Year/Make/Model: 2007 Mazdaspeed 6 (imported from U.S. -09) Mileage: 103,000mi Location: Finland, Northern europe Concern: Cylinder 2 misfire. Rough idle, but doesn't seem to misfire every cycle. Normal idle RPM. Very rough stuttering under acceleration, and blinking engine light (P0302). Engine...