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Sedans Mazda6 Mazda6 Engine Problems
96 messages, Last post on Nov 22, 2009 at 11:48 AM
You are in the Mazda6 Forum. Your Hosts are pat & karens
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Hey guys, I have found a used Mazda 6 2007 sedan sold by a private seller asking for 12800 with 12800 miles. The car is still under factory warranty. I would have a test drive. I have looked through the problem you have. After that, I am a little concern about mazda. But I have make an appointment with seller. So, could you give me any suggestion on test drive. thanks a lot. |
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Well I finally solved the mystery of the engine tapping sound after the car warms up when accelerating at low rpm (1200 rpm). Since this noise started happening immediately after my first oil change, I replaced the dealer installed oil with a quality oil (Valvoline 5W20), and behold, my engine is back to smooth even after it warms up, no more noticable tapping at low RPM. My theory is the crappy bulk oil being used by the dealerships (I tried 2 dealers) shears or thins out at high temp, and it is viscosity changes and is unable to provide the same lubrication to the upper engine (valvetrain). Since I do not get those noises when the oil is cold, that is the only explanation I can find. The valvoline oil seems to behave consistently well even after the car has warmed up. Now the question, what do I do now with this information. Mazda mechanic said Mazda would not honor warranty if I am doing my own oil changes. I am thinking of using their oil simply as an engine flush, and then draining it the moment I get back from their service shop and replace it with a quality oil. However should I be worried about any long term effects to my car since I already drove it about 10,000 kilometers on their crappy oil. Is there a way for me to prove easily their oil is bad such as an analysis by a third party that can give me written confirmation that the oil they are using is no good. Then I can take them to small claims court or something.
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I have a 2003 Mazda 6 4-cylinder automatic. A few days ago it started doing a couple of odd things. First, when slowing down (as to a stop light) the engine rpm SOMETIMES doesn't drop to idle as I approach the light. The engine wants to stay and around 1800 rpm and keep the car going. The brakes stop the car just fine, but the car wants to go. Second, when cruising at around 45 mph, the engine surges from 1800 rpm to 2200 rpm. It happens when in drive or in "manual" and also happens in cruise control. Third, twice the engine was REALLY trying to rev at a stop light. The second time it happened I put the car in neutral and the engine rev'ed to 3000 rpm so I shut off the engine. When I restarted it a minute later it acted just fine. I took it to the dealer today and they said there are no problem codes, and of course, it wouldn't do it for them. Any thoughts? Thanks.
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| While driving my mazda 6 the horn randomly goes off in short three burst usually when i hit the brake or sometimes just randomly. does someone know what this is | |
| while driving my mazda6 it randomly makes a horn sound but not as loud in a three set burst people think im beeping at them anyone know what this is | |
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Replying to: russ2003 (Jun 24, 2009 4:55 pm) |
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Replying to: scusiman (Jun 02, 2009 12:14 pm) Thank you |
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I have a 2003 Mazda6, 70K miles, well maintained and driven normally by single owner. It developed engine performance problems and dealer replaced two cat converters under emissions warranty. Engine performance improved but not nearly to normal level and it is tapping and clunking. Dealer claims that engine now needs $600 diagnostic teardown with the likely result being need for a new engine. Any thoughts or expeience on this one?
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| My 2006 Mazda 6 with 81k decided to blow up in July. I have perfect engine maintenance. I do not understand it. The dealerships just shake their heads. They must know that these cars are crap. Class action lawsuit is the only answer. | |
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Replying to: cpf1 (Aug 09, 2009 10:08 am)
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