2008 Mazda Mazda3 Q&A
2008 Mazda Mazda3 Question: My 2008 Mazda 3 (2.0) engine is running loud and very rough.
I know it needs new spark plugs and replace air filter but doubt they are the problem. The check engine light is NOT coming on. I have heard about engine mount problems with Mazda 3. Is this a possability? How about needing a valve adjustment? The vibrations get very bad at 50 mph and above. - michaelross16
the loud is most likely an exhaust leak. that leak will cause other drivability issues. fix that first then go after the rough running. it may be a motor mount but you would complain about other issues if that was the case. if you know it needs plugs why have you not changed them?? Roy - mastertech6371