p0302

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...

Okay, I have done a lot of research and posted on multiple forums but I am stuck. Preface: 2007 Stock Mazdaspeed3 with short ram intake. Bought at 108,000 miles from the original owner, currently has 120,000 on the clock. The Head gasket blew and burnt a valve at 112,000 miles. Replaced the...