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Mazda6 Engine Problems

96 messages,  Last post on Nov 22, 2009 at 11:48 AM

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What is this discussion about? Mazda MAZDA6, Auto Repair, Engine, Car Warranties, Sedan

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#65 of 96 Engine Problems by ianmatic May 15, 2009 (1:04 pm)
Replying to: racefanf1 (May 15, 2009 10:00 am) Question fo you guys: I have a 2009 Mazda 6 i with about 4000 miles on it. every time i start the car the engine idles at a relatively high rpm. after a bout a minute or two it drops down. Is this normal? whenever i shift in reverse at the higher rpm, the car shakes, whats the deal here? anyone else having this problem?
#66 of 96 Mazda 6 engine failurs by ausboss May 28, 2009 (1:04 pm)
I have an 2003 M6 and a 2004 M6. I have just loved the cars. I have now had to replace both engines from oil loss. The 2003 had a complete, sudden loss of oil that resulted from a cracked oil canister cap. The cracked cap showed what seems to be "wrench" marks where the failure was and also on the opposite side of the cap. The 2004 M6 also had a cap failure that allowed oil loss only while running until the oil was depleted and fatal engine damage occurred. Mazda appears to have a specialized oil cap socket that can be attached to a wrench to avoid oil cap damage. I am still investigating, but if this is true, Mazda needs to warn all Mazda owners. Changing the oil with out the use of this "oil cap socket" may be dangerous to the health of the engine. Anyone out there.... are you seeing what I am seeing? Replies to this message: ericzoom (May 28, 2009 3:24 pm)
#67 of 96 Re: Mazda 6 engine failurs [ausboss] by ericzoom May 28, 2009 (3:24 pm)
Replying to: ausboss (May 28, 2009 1:04 pm) This must be for the I4 with the canister filter, not the V6. I have the V6, and have not heard of any problems with any of the oil filters on that engine. I've used many different kinds of filters, and I usually just hand tighten it on my car. The only issue i've read about relating to oil loss was the PCV failing, causing rapid oil loss. That's why I check my oil level very frequently.
#69 of 96 Re: tapping noise [eddy23] by jkobty2 May 30, 2009 (9:29 pm)
Replying to: eddy23 (May 13, 2009 1:49 pm) my niece also has the same car and it has the same noises. So seems to be the norm for this 2.5L engine. I think they just did not spend enough time engineering it. it is based on the 2.3, so they probably increased the piston stroke, made it longer or something. but they did not balance it properly. Honestly it sometimes sounds like a diesel engine. It knocks at idle in park, the serpentine belt squeeks when idling in Drive, and the engine has a valve tapping or piston slap sound when accelerating at low rpm. I am going to mention it on my next service. But I do not want them to start messing with it. If enough of us complain about this, maybe they will issue a recall or something. But judging from this forum, Mazda does not seem to care much about their customers. Too bad it is such a nice looking car. My 10 year old Daewoo Leganza 2.2L engine still runs smoother and quieter with no valve or belt or piston noises than my brand new mazda6. But it seems to run fine once you drive it around 3000 rpms when accelerating, and it is a smooth cruiser, so might be not a serious issue. I now put the music on when I am at a drive thru, to avoid hearing it. Oh, well I have had better experiences with Korean cars before, and I do not think I will keep this one for more than the warranty period. Especially with that fragile oil canister system. It is a disaster waiting to happen. I heard that it can be changed to a normal system. If I end up keeping the car, I will look into changing it. Replies to this message: jeffyscott (May 31, 2009 4:04 pm) jkobty2 (Jun 01, 2009 6:25 am)
#70 of 96 Re: tapping noise [jkobty2] by jeffyscott May 31, 2009 (4:04 pm)
Replying to: jkobty2 (May 30, 2009 9:29 pm) There is nothing abnormal or fragile about a canister oil filter set-up. Many cars have that and my understanding is that it is an improvement over a "normal" spin-on oil filter.   What makes you think the gasket of a spin on, the only thing keeping the oil in the engine, is not as much or more of a disaster waiting to happen? Replies to this message: jkobty2 (Jun 01, 2009 6:25 am)
#71 of 96 Re: tapping noise [jeffyscott] by jkobty2 Jun 01, 2009 (6:25 am)
Replying to: jeffyscott (May 31, 2009 4:04 pm) While I see your point, gaskets can fail too. But I think it is more likely I will notice a gasket leak because is usually fails gradually, abrupt failures for oil filter gaskets is really not common. While a PLASTIC cover canister can easily crack just from the aging effect if not from a rough mechanic. Heat and age will cause any plastic material to deteriorate. Does Mazda specify a replacement period for this canister cover? or they wait, since after the warranty period, if you lose your engine, they will make more money? I think it is a bad design because it has so many points of potential failure: 1. Main O-ring 2. Bottom plug O-ring 3. Bottom plug torqued too much or too little. 4. Canister cracking 5. Canister torqued too much or too little.   I think it is just a cheap ploy to keep you coming to a mazda dealer for service, at least while your warranty is effective, and after that, I am sure the canister has a pre-engineered life span where if you are not smart enough to replace it, and think it will live for the life of the car, you will end up paying for a new engine yourself.
#72 of 96 Engine failure by scusiman Jun 02, 2009 (12:14 pm)
Wow these all sound familiar. Some how my oil just disappeared. I changed it 2 weeks ago I checked again this weekend and poof, one blown motor.Of course I called Mazda and they have not heard of any problems like this before. Its kinda funny as I have a coworker who engine did the same thing. His was replaced around 38000 mile mine went bad at 55,000 miles. Both of us had no warning light, or any warning at all. I was told to take it to the dealer and they would take a look at it. I think I'm pretty much screwed. 5000 dollars that I don't have. They know its a problem. I guess they would rather cover it up than to do what is right. They will pay for it in the end Replies to this message: racefanf1 (Jun 02, 2009 1:55 pm) willis6 (Aug 04, 2009 8:04 am) sicx66 (Sep 10, 2009 5:24 pm) racefanf1 (Sep 11, 2009 1:36 am) ericzoom (Sep 11, 2009 4:40 am) and 1 more... des5 (Sep 11, 2009 4:42 am) sicx66 (Sep 11, 2009 1:27 pm) ysche (Nov 13, 2009 11:36 am)
#73 of 96 Re: Engine failure [scusiman] by racefanf1 Jun 02, 2009 (1:55 pm)
Replying to: scusiman (Jun 02, 2009 12:14 pm) Well, include me in the Class Action Suit. I'm out thosands for my 2007 with 11,000 miles on it. Mazda refused to help me.
#74 of 96 Re: Mazda 6 SD (2003) engine problems at 50,000miles [cardiff] by scusiman Jun 03, 2009 (4:19 pm)
Replying to: cardiff (Nov 04, 2008 4:02 am) My car is 2006 same thing happened to me. Yesterday there was oil today it was gone. 55000 miles. Its in the shop now and I'm trying to get them to fix it.

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