I own a 2007 mazda6 sportwagon with 129000 miles and there was this mild pinging while lugging up a hill in 4th gear. This is very disheartening for me as I poured a lot of money and time effort to deal with this problem. Ive already replaced the cats, O2 sensors, cleaned then replaced MAF...

I've done a lot of research and looking around for an answer to my problem but can't find any, i apologize in advance if this has been asked before. I bought a mazda a week ago ans when it hits between 1200 and 1800 RPMs it has this intense vibration, it's really noticeable. It does it in park...

IS the 2004 3.0L V6 DOHC 24V engine compatible with the 2006 model? My timing chain jumped a couple teeth, and my valves are smashed, I found a GREAT deal on a 2004 Mazda6 V6 3.0 engine. Can I put the 2004, into my 2006? Also, the '04 is Automatic, and My '06 is the 5speed.