Edmunds.com | Inside Line | Auto Observer Your Account | Help | Directory
You are here:
![[F]](http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com/media/townhall/webxicons/site.gif){kind=small}
Forums
SUVs Mazda CX-7 C-7 Clanging Noise and black smoke out exhaust when accelerating
41 messages, Last post on Apr 21, 2009 at 8:03 PM
You are in the Mazda CX-7 Forum. Your Hosts are steve_ & tidester
|
Replying to: slw5 (Feb 19, 2008 6:26 pm)
|
|
|
Replying to: rethwilm (Feb 20, 2008 4:46 am) Emergency situations: when my margin of safety has been compromised due to the turbo lag. I do have to admit that the turbo lag has improved since they upgraded it but at first it was a scary situation I had never been placed in before. My husband has been in a few, what he calls "near death experiences" driving it and gets absolutely furious. Perhaps his non-enjoyment of the car is intensified because I got rid of a perfectly good paid off vehicle that he loved. I wanted something smaller and the Liquid Platinum CX7 is just the most amazing looking vehicles parked or on the road so I just purchased it without an ounce of research on it whatsoever (which is so unlike me). I was told not to drive it because I have been in a lemon law discussion which is still not resolved. Either take the offer Mazda put on the table or go to litigation. I'm hoping to resolve this within the next few days and get the clanging/knocking/smoke issue addressed. Then I'll be more happy with the car I'm sure.
|
|
|
Replying to: slw5 (Feb 20, 2008 3:03 pm) I hope that you are happy with any situation that occurs with Mazda and please keep all of us informed.
|
|
|
Replying to: rethwilm (Feb 20, 2008 11:55 pm) I've also heard a little mechanical noise from the car, sounds like it is under the hood to me. Nothing too alarming, sort of a rattling noise. I have no problems with turbo lag, performance is always great. I've only put 91 octane in it, always from Shell or 76 or Chevron. I thought it might have been a problem on the '07s, maybe not. Anybody have any info?
|
|
|
It's Tuesday so that means mazda chat time again. Stop in and meet and greet with your fellow Mazda lovers. Or just stop by for a little fun and car problem chat diagnosis. (One of our favorite games..heh) The Mazda Club Chat is on tonight. The chat room opens at 8:45PM ET Hope to see YOU there! Check out the schedule |
|
|
Replying to: bcwyatt26 (Mar 25, 2008 7:50 am) I'll definitely let you know what the "fix" is. They didn't tell me if they had a fix or were going to try to fix it. Mazda is doing everything they can to make me happy with Mazda at this point. I will definitely let everyone know what they do to repair my car and if it worked. 
|
|
|
For those of you out there that responded regarding the awful clanging/rattle noise in the engine that resulted in black smoke that blows out the back on my CX7 . . . . I finally got it fixed by the Mazda Specialist that came to our local dealership. Keep in mind I was involved in the PCM recall that had to do with the light on the dash but that never fixed the problem. The special Mazda engineer had my car for 2 days. He had trouble duplicating the issue at first but our local dealership serviceman showed him what he did to make it to happen and HOORAY, they both got to experience it more than once. They put 50 miles on the car in their effort to duplicate it and some reprogramming. I had to bring all my keys for the repair which I thought was odd but now I understand they go hand in hand with the programming of the PCM. They put all new 2008 parts on it: Replaced the PCM and the Variable Timing Actuator, did reprograming of the PCM, decarb of the intake, and changed my oil. Of course, this is only a few days into the repair but it truly drives like brand new and is more responsive with less turbo lag. They gave me the Sport version of the CX7 for my rental and I felt so deprived of all my amenities. Can't tell you what a chore it was to use that switchblade key . . . just the mere fact of getting it out of my purse when I am so used to walking up to my car and just getting in was an effort). Gosh, and no back up camera or heated seats. I am so happy to have my very own car back . . . and gosh, it is such a great looking car!!!!! Anyway, I am a very happy CX7 owner now!!!!! 
|
|
|
Replying to: slw5 (Jan 22, 2008 7:58 pm) I posted the outcome of my situation with Mazda but not sure if I replied to the thread so I thought I would email you separately since you were the first to contact me and you wanted to know the outcome . I am very happy with my outcome with Mazda and my car drives like a totally different car. Amazing! I finally got it fixed by the Mazda Specialist that came to our local dealership. Keep in mind I was involved in the PCM recall that had to do with the light on the dash but that never fixed the problem. The special Mazda engineer had my car for 2 days. He had trouble duplicating the issue at first but our local dealership serviceman showed him what he did to make it to happen and HOORAY, they both got to experience it more than once. They put 50 miles on the car in their effort to duplicate it and some reprogramming. I had to bring all my keys for the repair which I thought was odd but now I understand they go hand in hand with the programming of the PCM. They put all new 2008 parts on it: Replaced the PCM and the Variable Timing Actuator, did reprograming of the PCM, decarb of the intake, and changed my oil. Of course, this is only a few days into the repair but it truly drives like brand new and is more responsive with less turbo lag. They gave me the Sport version of the CX7 for my rental and I felt so deprived of all my amenities. Can't tell you what a chore it was to use that switchblade key . . . just the mere fact of getting it out of my purse when I am so used to walking up to my car and just getting in was an effort). Gosh, and no back up camera or heated seats. I am so happy to have my very own car back . . . and gosh, it is such a great looking car!!!!! Anyway, I am a very happy CX7 owner now!!!!!
|
|
|
i have not heard the noise from the engine that most people describe. However, i just started to realize that my tail pipes are black. I cleaned them for the 1st time yesterday and I am keeping tabs on how long before they get black. is too much of the black stuff mean that my gas is not being burnt efficiently?? do i need to mention it to the dealer? i have 5k miles on my car, 2nd oil change was done today. any adivse?
|
|
|
Replying to: dmele426 (Apr 08, 2008 8:21 am) My biggest complaint was the rattle/clanging noise which resulted in black smoke blowing out the pipes and, of course, the turbo lag. My car was purchased June 2006 so it was one of the early ones sold and I complained about it since the first month I owned it. I now have all new 2008 parts and it runs great. New PCM, actuator, and they did a decarb of the intake I think and an oil change. They never told me what was really wrong with it but I assume my gas was not being burnt efficiently either. I did notice that the noise/smoke was worst if I used Techron gas during the issue but I've put it in since and the car continues to run amazing. It has a tighter feel if that makes sense and it shifts smoother and I haven't heard the noise once It is like driving a completely different car now. I am so happy to get in it every morning and zip around town to work. Not very far but I'm having fun again. Have they done a PCM reflash? They did that to mine months ago and it didn't help but since yours in newer maybe it would help. good luck! |
|
You are here:
Forums
SUVs Mazda CX-7 C-7 Clanging Noise and black smoke out exhaust when accelerating
New? Join Now!
Forum Tools
Search Forums
Browse by Vehicle
2010 Mazda CX-7
Browse by Board
Browse by Topic
Today's Chats
