So I bought an 05 Mazda 6 V6, black on black leather, full options, 66k miles. I really love this car, I was considering an Acura TL, but, found that spending $14k on a car with 120k+ miles was just ridiculous, even though I come from owning Acura Legend's and Honda Accord's.
Anyway, get used to this whole Mazda thing
I love that this motor was designed by Porsche, sold to Ford and then put into one of the nicest looking sedans made in the last 10-15 years. The concern I have is that I notice a "burning" type smell when I pop the hood, or, standing near the outside of the car. It's almost like burnt brakes, but, I know burning brake smell and it's not. Doesn't smell like oil, and no smoke anywhere, gets me thinking it might be the pre-cat's. I have never had a cat go bad on me before...I really never cared all that much, because the EGR system in my other cars never fed the engine catalyst material when the cats did go bad, but, apparently these Mazda 6's have a proclivity for doing so, so before this might kill the motor, I would rather be proactive with a solution. Much like the Acura Legend and the blown headgasket situation, you had to be proactive about cleaning the EGR system to avoid the BHG's (that or swap in the 3.5L motor from the RL, which I did both of).
Can I gut the pre-cats and still run the car w/o getting a CEL, or perhaps change to a different set of pre-cats KNOWN to not have this issue. I mean, I NEVER drive on a CEL, and I check the A/F ratio whenever I can just to see what's up, I never put my vehicles in a situation that could endanger the cats, BUT, this is a new car to me and I have only had it for 300 miles, who knows what the previous owner did. One LAST thing, and another rather concerning issue, from idle, if I just barely rest my foot on the accelerator, I get a rhythmic "ticking" sound that is NOT RPM dependent. My first thought was, "oh shit, a rod bearing went out" but, this is too much a "solenoid" sounding tick, way too rhythmic and steady, again w/o change during RPM increase or decrease. If I had to guess I would almost say it seems like it is this electronic throttle body opening and closing, but, I really don't know. I have no oil consumption, oil is clean and where it has been for the last 300 miles, just wanting some help with this if possible. Also, hello to all at the forum and thanks for having me