- #14 of 23
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Re: 2007 Cx7 Chain Slap Noise ? [maytagman]
by howardru
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Oct 14, 2009 (11:55 am)
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Replying to: maytagman (Oct 13, 2009 2:51 pm)
Infortunately, the 2007 model year seems to be loaded with engine and turbo problems that occur prematurely and very early in the life of the car. Just take a look at all the message boards about the engine problems. Check out
www.mcx7.com and www.mazda247.com
#1) That is a good question. One would think that the CEL would light up with such a "dramatic" event. A timing belt should be replaced periodically per the owner’s manual specifications. It may have worn and stretched just enough to slip over a cog a bit. The dealer must remove the timing belt covers and check the alignment of your cam and crank. If it really jumped, there should be subtle marks on the cogs and the rear cover or casting. The compression will be good during a cranking test, but will not be ok during a running compression check. If that’s the case, they should replace the timing belt and check the pulleys. If your timing belt did not slip, the timing chain tensioner or guide shoes may be worn and will require replacement Either way, this seems to fall outside the normal replacement guidelines and I would consider this a premature failure of the system.
2) Yes, for them to honor their warranty they have been demanding proof of service which based on the owners manual is oil change every 7,500 miles. If you have done them yourself then you need to show sales receipts of 6 quarts of oil and an oil filter on the sales receipt dates about every 6 months or 7,500 miles. If it is not a problem to get the sales receipts, then just do it, so you leave nothing to chance.
Good luck!
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- #15 of 23
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CX-7 Timing Chain and then the Turbine
by gentemio
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Oct 28, 2009 (3:20 pm)
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In August while travelling down Route 95 in Delaware, the CX-7 going at speed of 60 shut down. Car had to be wrestled to side of the road as everything died and there could have been a horrible crash. Car towed 125 miles to dealer. Timing chain broke at 73,000 miles. Dealership said it happens. Needed to replace the engine at a cost of 7,000. Wrote letter to Mazda citing fact a timing chain would eventually need to be replaced but not at 73,000. Mazda had no compassion and refused to give any break due to mileage. Three thousand miles later and a month later, turbine failed. They wanted 3,500 to fix it. Called Mazda explained problem first the engine then the turbine. Probably happened due to lack of maintenance. Wrong I have all the receipts. They didn't care. Mazda said we will call you back. Never did. Got rid of the car at a loss. We will never buy a Mazda again. We never even saw the service manager at the dealership. Mazda USA was non-responsive  . There is something wrong if both the engine and turbo fail at the mileage they did. Oh yeah they refused to pick up any cost of the rental car. No more Mazda.
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- #16 of 23
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Re: CX -7 engine problems [howardru]
by desertgirl1
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Oct 29, 2009 (12:10 pm)
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Replying to: howardru (Sep 29, 2009 3:24 pm)
Thank you for that great info. I will definitely call him before my hearing which is scheduled for Tuesday the 3rd of Nov. I am so tired of dealing with this issue. I haven't had a car for so long. Its awful when you play by the rules, struggle and fight to give your kids a good life and then something like this happens to make things more difficult! Its a bit overwhelming at times. Thanks for all the input.
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- #17 of 23
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Re: CX -7 engine problems [desertgirl1]
by mmasterson1
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Oct 31, 2009 (9:54 am)
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Replying to: desertgirl1 (Sep 29, 2009 9:54 am)
I am so glad to read this comment about the timing chain. 2 weeks ago I was on a trip(to St. Louis from Tulsa, OK) and a "knocking" noise started once I was on the highway at speed (70 mph) and I was losing power intermittently while accelerating. It continued for about an hour and I found the nearest authorized Mazda dealer (Reliable Mazda in Springfield, MO) and stopped to ask. It was close to closing time on a Friday evening. The Service Manager made a cursuory check, and "conveniently" thought to check the timing chain by opening the oil reservoir cap and visualy inspecting. He said it looked fine. I asked him to describe to me the "symptoms" of a timing chain that is not operating correctly (ie. slipping, etc.). Everything he described made it sound like a timing chain issue. I asked how serious it looked and his exact words, "well, coulld be or couldn't be" I asked him what I should do and he replied,"well, you can continue or your trip or not, I just don't, but it could be fine." So, being late my wife and I set back out, not 20 mins later the timing chain failed. The car is 2.5 years old with just 34k miles on it and regular maintenace. Although I am in the similar situation with Mazda Warranty in that I have 2 verifiable oil change receipts. But they HAVE denied my warranty claim. After speaking with the District Service Manager for the region that works directly for Mazda USA and not the dealer, he explained that despite the owners manual having the oil changes at every 7500 miles it should be no more than 3-5k miles because the turbo engine is HARD on the timing chain. I'm sorry but us poor, dumb consumers are not certified technicians on high performance turbo charged engines. After reading this and a couple other stories about this EXACT same issue, I believe that Mazda engineered an inferior timing chain for the stress that the 2007 model year engine places on it.
I have filed complaints with the BBB against Mazda USA, as well as, the California Attorney General. I have also sent complaint letters to the following people:
James O' Sullivan - President and CEO, Mazda North Am Ops
Yasuo Kunita - VP Customer Service, Mazda North Am Ops
Eric Johnston - VP Sale, Service, and Parts, Mazda North Am Ops
Blase De Leo - Regional GM Southeast Region, Mazda North Am Ops
Ron Stettner - Regional GM Midwest Region, Mazda North Am Ops
at the following addresses:
10 Corporate Park, Ste 200
Irvine, CA 92606
and
7755 Irvine Center Drive
Irvine, CA 92618
I recommend that every person suffering from this systemic issue do the same and apply the very appropriate pressure on a car company that has made a great car but with inferior engineering. Warranty will repair this issue and make sure it does not happen again. Anyone else suffering this issue please contact me at mmasterson1 gmail.com and we can coordinate a strategic camapign to resolve this issue for other American in this situation.
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- #18 of 23
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Re: CX -7 engine problems [mmasterson1]
by gentemio
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Oct 31, 2009 (2:11 pm)
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Replying to: mmasterson1 (Oct 31, 2009 9:54 am)
Thank you for the infomation on the corporate officers. I also filed a complaint with the Nathional Highway Transportation Safety Board.
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- #19 of 23
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Re: CX -7 engine problems [gentemio]
by maytagman
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Oct 31, 2009 (3:29 pm)
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Replying to: gentemio (Oct 31, 2009 2:11 pm)
Heres one for you Brought the car to the Mazda dealer in Danvers Ma. where I bought it just 24 months ag now 27, K miles later Complained about ticking noise They took the valve cover off determined Engine sludge told that this caused it to jump timing and that they would have to take pics and have Mazda review to see if they would cover the repair ,Also asked me to provide the oil changes for the past 24 months which I di ( 5 of them ) aprox evry 3,500 miles Told me to drive the car home and park it, Well the car runs great so I dropped it by the local certified garage They said it needed a good oil change and the timing is fine . Still waiting for the Dealer to call me and bring back to have the repairs they tell me that Mazda will not cover this in warranty , So being the smarty pants that I am I bring it to another Mazda dealer and pay them to check it out . They listen to the engine and take it for a test drive Top guy says what are you crazy Nothing wrong with this car . They then call me at work later on and clue me in that According to Mazda they revoked our engine warranty after looking at the pics from the previous dealer ,So a misdiagnosis by the dealer has cost us our warranty . Yeah like I'm gonna let this one droppppp. Good thing I was able to get my oil receipts from the three different companies that changed the oil The second Mazda dealer is going to bat for us Stay Tuned ...and wish us luck
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- #20 of 23
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Re: CX -7 engine problems [maytagman]
by mmasterson1
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Oct 31, 2009 (4:11 pm)
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Replying to: maytagman (Oct 31, 2009 3:29 pm)
If you read mine that is exactly what happened and here is one better for you. At my 30,000 mile oil change the Mazda Dealership said there was sludge. But I had properly maintained the engine, so I had them clean the sludge. Then the incident with the timing chain breaking occurred at 34k miles, heres the kicker, when the Mazda dealership I towed it to opened it up... you guessed it SLUDGE. And of course they are citing improper maintenance as the reason. BUt how can an engine have more sludge f it has been cleaned. Assuming the cleaning was done, that means the engine must burn oil at an outrageous rate and producing the more than average sludge. Combine that with the multiple notations that the turbo engine of the CX-7 produces extreme pressure and heat (direct statement from Mazda white papers and Mazda District Managers) that equals...drumroll...an engineering defect!
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- #21 of 23
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Re: CX -7 engine problems [mmasterson1]
by wwest
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Nov 01, 2009 (8:20 am)
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Replying to: mmasterson1 (Oct 31, 2009 4:11 pm)
Sorry, turbo engines are ALWAYS defective, far from an optimal design, VERY far.
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- #22 of 23
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CX -7 engine problems [desertgirl1]
by howardru
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Nov 02, 2009 (7:14 pm)
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You've done everything I would do except for one thing.
Here in Boston, some of the local ABC, CBS and NBC news affiliates have a consumer advocate that reports on scams or bad business. These spots are run during the evening news. Ild call them and have them show up a the Mazda dealership or perhaps they can call Mazda USA and see what response they get now.
I'm truly hoping these problems have been resolved in the 2009 model.
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- #23 of 23
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Re: CX -7 engine problems [maytagman]
by boesman1
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Nov 10, 2009 (5:44 pm)
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Replying to: maytagman (Oct 31, 2009 3:29 pm)
Here is a GREAT idea if you do not get the resolution you desire in this situation. Go and park your car outside the dealers entrance on weekends and tie a bag of lemons from every door handle on the car. In addition write a BIG sign that says Mazda sold me a lemon and wont fix it. I guarantee this will capture the attention of the service manager to resolve the issue. In the meantime drive all around town with the lemons hanging from your door handles. No making lemonade here, this is just sour business practices that need to be stopped.
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