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Engine failure-2010 A6 3.0T-Common problem?

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Old 03-26-2014, 09:15 PM   #1
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Default Engine failure-2010 A6 3.0T-Common problem?

I purchased a 2010 A6 3.0T about 6 months ago. It now has 65k on the odo and last week while at WOT I felt a loss of power and then the TPMS, ESC, and check engine lights came on (in that order). I also discovered later it was puffing blue smoke. I was close to my mechanic so I dropped it off. Turns out cylinder 1 was was low on compression (40psi vs. 140psi) and the spark plug was oily. My mechanic is sure it's a problem in the block and suggested replacing the engine with a used one.

I was under the impression these are fairly reliable engines and the guy who runs the shop was beside himself, echoing the sentiment that he can't believe this happened.

I am going to contact my local Audi dealer and if I don't get any where with them possibly AOA to see if I can get any monetary assistance with the repair. I'm not holding my breath since it's out of warranty but it's worth a shot. I have nearly 200k miles on my A4.

Is this a problem others have seen with this engine?

Also, if anyone knows of a place where I can purchase a reconditioned short block that would be helpful. Haven't been able to find much since the car is so new. There are a few engines on car-part.com but none particularly close to my area.

Thanks!
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Old 03-27-2014, 03:29 AM   #2
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Head gasket? I'd assume that before I thought block..
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Old 03-27-2014, 06:03 AM   #3
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Sorry to thread jack.....

@ Kris... Have you really posted 66.5 million times?!
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Old 03-27-2014, 08:19 AM   #4
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Thanks Kris. I just had that conversation with my Audi mechanic and he was stating that he has never seen a head gasket go on an Audi V6 before and he's been working on Audi's for a long time. However, we did talk about how this is a supercharged engine and he admitted not having a lot of experience on the 3.0T but the supercharger could introduce the greater likelihood that its the head gasket. He's going to follow-up with a colleague who has more experience on this engine to discuss the possibility of it being the head gasket.

On an additional note, there is no coolant in the oil and only one cylinder is down on compression but I guess its possible for an oil passage to have blown in to that one cylinder.

Has anyone seen head gasket issues with the 3.0T?

I really hope it is the head gasket because otherwise I'm looking at a $5000 - $6000 repair, likely.

Thanks!

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Head gasket? I'd assume that before I thought block..
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Old 03-28-2014, 02:36 PM   #5
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Is the block aluminum? Sounds like a broken ring.
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Old 03-28-2014, 02:57 PM   #6
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Tell him to do a leak down test, if the are bubbles in the coolant tank then your head gasket may be blown, if there is air pressure coming from the dipstick hole then your rings are fried and so on. It is not a fool proof test, but it can help diagnose your motor without taking it apart. If he does not know what a leak down test is, well then.....
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Old 03-28-2014, 06:40 PM   #7
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Agreed..
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Old 03-28-2014, 06:42 PM   #8
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HAHA! Actually no, when we were playing around with the new software I decided to try to see if we could change the post counts.. turns out we could.. my actual post count is closer to 50k...
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Old 03-28-2014, 07:08 PM   #9
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Quote:
Originally Posted by 4Driver4 View Post
Is the block aluminum? Sounds like a broken ring.
Block is aluminum with some alloying (AluSil) no liner.
I was thinking rings also.
Mr D--what was your oil consumption over the 6 months and x miles?
Do you have increased boost (smaller diameter blower pulley)?

mine 'uses' when i get on it. it is all stock.
redlined 1st and 2nd on the way to work (after 20 minute warmup of course....) this morning.
may have to back off a bit....
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Old 03-29-2014, 11:21 PM   #10
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The car is stock AFAIK. I haven't personally done any mods to it and the mechanic who has driven these before does not believe it has had the software flashed.

I didn't check the oil before the oil was changed less than 4000 miles ago. (I've put about 7k on the car myself). I did have to add about a 1/2 quart about 2400 miles after the oil was changed. Unfortunately I didn't check the level right after it was changed. (I negotiated a free oil change when I bought the car since it needed to be changed soon so it was changed by the dealer from which I purchased the car.) Coincidentally, I checked the oil the weekend before the catastrophe and it was right at the bottom of the "Do not add oil" section of the dipstick so I decided not to add oil yet. It's been less than 1500 miles since I added the 1/2 quart.

Does that sound like "normal" oil usage for a 3.0T of this mileage? I bought the car with about 58k and it has 65k on it now.

Unfortunately, I do not have any relevant service records from the previous owner, who only seemed to own the car for about a year but did put a lot of miles on the car. The first owner seemed to have gotten it serviced regularly but I don't have details, only what showed up on the Carfax.

I do like to stand on the throttle, but I'm not someone who is going to be doing 130 mph on the highway. I don't consider myself someone who abuses his cars but I do enjoy driving "spiritedly". I also take good care of my cars and keep great service records.

Thanks for the advice everyone. I'm definitely going to mention the leak down test on Monday.


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Originally Posted by FL C6.5 Avant View Post
Block is aluminum with some alloying (AluSil) no liner.
I was thinking rings also.
Mr D--what was your oil consumption over the 6 months and x miles?
Do you have increased boost (smaller diameter blower pulley)?

mine 'uses' when i get on it. it is all stock.
redlined 1st and 2nd on the way to work (after 20 minute warmup of course....) this morning.
may have to back off a bit....
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Old 03-29-2014, 11:24 PM   #11
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Is anyone aware of any precedent of Audi helping to cover costs of a major engine failure such as this when the car is out of warranty? But, with only 65k on the odo and the car being 5 years old, this should not have happened IMO.

I was hoping to hear if anyone else had any problems such as this to build a case with AOA but it sounds like I am possibly just unlucky. :-(
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Old 04-12-2014, 12:10 PM   #12
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For those that are interested, I was able to get significant help with the cost of replacing the engine. I contacted Audi Customer Relations and explained my situation as well as my Audi ownership history. They had me take it to a local dealer to diagnose. They put a bore scope into the bad cylinder and the cylinder walls are gouged badly. They quoted me $17000 to replace the long block but they heavily discounted it so I'm getting a new engine with 12 mo./12k mile warranty for not much more than a used engine would have cost.

I'm still bummed that I have to pay this when I've only had the car for 6 months and put only a little over 6000 miles on it. But, it is what it is and I'm just going to have to deal with. Any projects that my bonus and tax return would have gone towards will just have to wait until next year.

At this point, I just want the car back.

Thanks for all of the advice!
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Old 04-12-2014, 03:21 PM   #13
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Glad you were able to reach an agreement that may not be perfect but one that you can live with. Thanks for sharing the outcome. Hope you get the car back soon.
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Old 04-13-2014, 07:31 PM   #14
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Yours was the first 3.0T that I've seen grenade. It has proven to be a reliable engine. Hopefully your ownership experience will improve.
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Old 10-19-2014, 05:50 PM   #15
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I requested the service history this week and found out the first owner had the Stasis software flash done at 14k miles. The car had 65k miles when the engine issue occurred. I wonder if it could have contributed to the failure?

The service history is not complete, I think the first owner had some of the maintenance done at an indy mechanic. Who knows, maybe they weren't using the correct oil, or something.
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Old 10-20-2014, 12:59 PM   #16
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Quote:
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I requested the service history this week and found out the first owner had the Stasis software flash done at 14k miles. The car had 65k miles when the engine issue occurred. I wonder if it could have contributed to the failure?

The service history is not complete, I think the first owner had some of the maintenance done at an indy mechanic. Who knows, maybe they weren't using the correct oil, or something.
was the flash still in the ECU when it blew? wondering if a chunk of carbon would be more likely cause?
don't suppose there was any post-mortem autopsy?
how's the new long block?
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Old 10-20-2014, 07:37 PM   #17
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I assume that the Stasis flash is still installed. The car always felt stronger than I expected but I never drove another one for comparison. I didn't see any evidence in the service history that the ECU was flashed back to stock and it noted at 40k miles when the first owner traded it in that the car was not CPO eligible due to "Stasis Modification". I may not have mentioned that the dealer did the Stasis flash.

WOW, could a chunk of carbon be THAT bad? Never considered that. The only thing the dealer could tell me via scope was that the cylinder walls in Cyl 1 were gouged badly. I doubt they spent the time to tear down the engine.

The new engine is running great. I'm nearly ready for my first, 5000 mile oil change.
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Old 01-02-2015, 07:05 AM   #18
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Default 2.0T, 3.0T Oil Consumption

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I assume that the Stasis flash is still installed. The car always felt stronger than I expected but I never drove another one for comparison. I didn't see any evidence in the service history that the ECU was flashed back to stock and it noted at 40k miles when the first owner traded it in that the car was not CPO eligible due to "Stasis Modification". I may not have mentioned that the dealer did the Stasis flash.

WOW, could a chunk of carbon be THAT bad? Never considered that. The only thing the dealer could tell me via scope was that the cylinder walls in Cyl 1 were gouged badly. I doubt they spent the time to tear down the engine.

The new engine is running great. I'm nearly ready for my first, 5000 mile oil change.
Sorry to hear about your difficulties. I have a 4.2L A6 without oil consumption concerns (but with a timing chain that had to be replaced at 130k for $3k!) and I've been looking at either an S5 Cabrio (3.0T) or an A6 with the same engine. On another board I read that the spec for oil changes on both "T" (not really turbos, right?) is something like 1200 or 1500 miles. I have not seen such a discussion thread (yet) on AudiWorld. My concern is if these engines use that much oil, I would have to rely on the original owner maintaining that ridiculous oil replenish regimen. Whether Audi dealers do it as part of the included maintenance or not, 1500 miles is still a PITA. In your dealings with Audi, did you hear of such frequent oil change specs? Thanks.
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Old 01-02-2015, 07:13 AM   #19
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Oil CHANGES? No, Audi says 10k for full changes, but probably the min distance for adding 1 full quart?
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Old 01-02-2015, 07:13 AM
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