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7 Series - F01 / F02 (2009 - current)
The new re-designed 7 series F01 / F02 leads off the BMW Fxx chassis code!

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  #1  
Old 09-20-2011, 08:13 AM
hammadurb hammadurb is offline
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Smokey exhaust lead to replacing twin turbo!

I noticed there was visible, albeit light, smoke coming out of the exhaust when the car was idle. I took it in to the dealer and told them that they topped of a quart of oil the day before and they thought it might be something minor and since I am due for an oil change in 1600 miles, just to observe and if the problem becomes worse to bring the car back. While I was discussing with the SA, a tech came out stepped on the throttle and a lot of smoke came out and they recommended that they look it over. I got a call my SA yesterday saying there was an issue with both turbos and they ordered replacements which should be coming in tomorrow. Anyone else experience this problem?
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  #2  
Old 09-22-2011, 03:42 PM
hammadurb hammadurb is offline
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They replaced the turbos and it would have cost $5600 plus labor. Purchasing the extended warranty and maintenance paid for itself. I got the car back and I got another error message and I brought the car back and two cylinders are misfiring. They said it should be fixed by tomorrow.
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Alpine White - Silverstone II Extended Merino Leather - Driver Assistance Package - Executive Package - 20" M light alloy wheels Style 343M - Bang & Olufsen Sound System - M Performance Black Kidney Grille


12 650i / 09 750li / 06 750li / 03 745li / 00 540i
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  #3  
Old 09-22-2011, 08:22 PM
oneofew oneofew is offline
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How many mi are on the car? Wonder if Dinan boost upgrade has anything to do with the turbos fouling out prematurely?
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  #4  
Old 09-23-2011, 07:07 AM
hammadurb hammadurb is offline
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The car has 62k miles on it. I asked if that was the case but they did their inspections and determined the turbos were just defective.
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2013 BMW M5

Alpine White - Silverstone II Extended Merino Leather - Driver Assistance Package - Executive Package - 20" M light alloy wheels Style 343M - Bang & Olufsen Sound System - M Performance Black Kidney Grille


12 650i / 09 750li / 06 750li / 03 745li / 00 540i
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  #5  
Old 09-23-2011, 07:51 AM
dfwbiker dfwbiker is offline
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When I bought my 2009 750li earlier this year, it only had 24K miles on it, and had just had one of the turbos replaced.
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  #6  
Old 09-23-2011, 12:59 PM
GeneJ GeneJ is offline
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Quote:
Originally Posted by hammadurb View Post
They replaced the turbos and it would have cost $5600 plus labor. Purchasing the extended warranty and maintenance paid for itself. I got the car back and I got another error message and I brought the car back and two cylinders are misfiring. They said it should be fixed by tomorrow.
You sure don't want to own one of these cars out of warranty, any indication why both turbos failed?
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  #7  
Old 09-24-2011, 05:30 AM
hammadurb hammadurb is offline
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Quote:
Originally Posted by GeneJ View Post
You sure don't want to own one of these cars out of warranty, any indication why both turbos failed?
I'm going to ask them when I go back.

My SA called me yesterday and said that the fuel injector needs to be replaced. The annoying thing is, my oil service is due in 1500 miles and they can't do the service. It might sound a little strange but I think I'm going through separation anxiety.
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2013 BMW M5

Alpine White - Silverstone II Extended Merino Leather - Driver Assistance Package - Executive Package - 20" M light alloy wheels Style 343M - Bang & Olufsen Sound System - M Performance Black Kidney Grille


12 650i / 09 750li / 06 750li / 03 745li / 00 540i
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  #8  
Old 09-24-2011, 05:59 AM
GeneJ GeneJ is offline
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Let us know.
Hope you get it back soon..seems like my dealer is allways behind.
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  #9  
Old 09-26-2011, 04:02 PM
hammadurb hammadurb is offline
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My SA called me today and after replacing the fuel injector they are still getting the engine warning light so they need to run more diagnostics to find the error. Will update once as soon as I hear anything new.
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2013 BMW M5

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12 650i / 09 750li / 06 750li / 03 745li / 00 540i
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  #10  
Old 09-27-2011, 07:27 AM
GTZ GTZ is offline
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About the turbos...
For sure the Dinan software raises pressure and leads the turbochargers to their upper limits.62000 miles are too much for a stressed turbocharger...
About missfires and engine warning light...
Tell them check the lambda sensors.It could be dirty because of the oil leak.If injectors are OK,check for the ignition coils.If all of the above are OK (injectors,ignition coils,lambda sensors),be prepared for serious engine damage (piston etc)...
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  #11  
Old 09-27-2011, 09:14 AM
hammadurb hammadurb is offline
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Quote:
Originally Posted by GTZ View Post
About the turbos...
For sure the Dinan software raises pressure and leads the turbochargers to their upper limits.62000 miles are too much for a stressed turbocharger...
About missfires and engine warning light...
Tell them check the lambda sensors.It could be dirty because of the oil leak.If injectors are OK,check for the ignition coils.If all of the above are OK (injectors,ignition coils,lambda sensors),be prepared for serious engine damage (piston etc)...
I told them that I did have long crank issues, hopefully it's the ignition coils. Let's see, he should be calling in a couple of hours so let's see. Thanks for the heads up.
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2013 BMW M5

Alpine White - Silverstone II Extended Merino Leather - Driver Assistance Package - Executive Package - 20" M light alloy wheels Style 343M - Bang & Olufsen Sound System - M Performance Black Kidney Grille


12 650i / 09 750li / 06 750li / 03 745li / 00 540i
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  #12  
Old 09-29-2011, 01:55 PM
hammadurb hammadurb is offline
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Got a call from my SA today and he said they need to clean the engine valves and remove excess carbon deposits. He said that everything should be done by next Wednesday or Thursday!
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2013 BMW M5

Alpine White - Silverstone II Extended Merino Leather - Driver Assistance Package - Executive Package - 20" M light alloy wheels Style 343M - Bang & Olufsen Sound System - M Performance Black Kidney Grille


12 650i / 09 750li / 06 750li / 03 745li / 00 540i
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  #13  
Old 09-29-2011, 02:29 PM
oneofew oneofew is offline
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So the heads are coming off the car, what's next? Rebuild the heads?
Wow, they should just swap them with a new set, get you on your way.
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  #14  
Old 09-30-2011, 01:06 AM
GTZ GTZ is offline
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Quote:
Originally Posted by hammadurb View Post
Got a call from my SA today and he said they need to clean the engine valves and remove excess carbon deposits. He said that everything should be done by next Wednesday or Thursday!
This is not good news...
I hope you have not more serius damages inside the engine because this is usually the cause of missfires (if injectors end ignition coils are ok).

Excess carbon deposits could occur when engine runs too rich fuel mixture and when you drive too often for short time.
In the 1st case you should check Dinan software.I have the information that BMW twinturbo engines run at lean mixture till 5000 rpm (14.7:1) and it goes richer till 7000 rpm (12.5-13:1).If dinan software is the cause of carbon deposits,it's possible that dinan engineers made too rich mixture (usually for safety reasons,to avoid engine knock).

The other "scenario" (the bad one) that is also possible,is that dinan software raises turbo pressure too much without altering enough the fuel mixture and the ignition advance.This leads to an overheating combusting chamber,engine knock and piston damage.

Anyway I hope I'm wrong...and your issue will be not solved painful.
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  #15  
Old 09-30-2011, 03:41 AM
GeneJ GeneJ is offline
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How many miles have you driven with the Dinan flash? Do you drive a lot of Hiway or City?
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  #16  
Old 09-30-2011, 08:04 AM
hammadurb hammadurb is offline
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Mein Auto: 2009 BMW 750li
The flash was done at about 32k and I put 30K miles since then. Most of it is highway miles. At this point, I don't care what they do, I just want my car back. I am not too worried about the long term effects because it is a lease car but I do have 13 months left.
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2013 BMW M5

Alpine White - Silverstone II Extended Merino Leather - Driver Assistance Package - Executive Package - 20" M light alloy wheels Style 343M - Bang & Olufsen Sound System - M Performance Black Kidney Grille


12 650i / 09 750li / 06 750li / 03 745li / 00 540i
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  #17  
Old 10-04-2011, 05:18 PM
hammadurb hammadurb is offline
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Just picked up my car and I don't think I have been this happy to see it since I first got it. I attached the invoices with this post and you can see the work that was done. They still don't have an answer as to why the turbos failed but they said the excess carbon deposits were due to the failed turbos. They had to completely remove the transmission, intercooler, and the engine. When I picked up the car, I saw their paperwork and it was as thick as a textbook! Finally I have my car back and the car's performance seems surreal after driving a 528i for two weeks. I didn't know the new 528i is a V4 twin turbo. I was very satisfied with the 528i and I look forward to getting the new M5 after my lease is up.
Attached Files
File Type: pdf Turbo Repair.pdf (405.7 KB, 349 views)
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2013 BMW M5

Alpine White - Silverstone II Extended Merino Leather - Driver Assistance Package - Executive Package - 20" M light alloy wheels Style 343M - Bang & Olufsen Sound System - M Performance Black Kidney Grille


12 650i / 09 750li / 06 750li / 03 745li / 00 540i
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  #18  
Old 10-04-2011, 06:19 PM
GeneJ GeneJ is offline
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The best part of the invoice was the bottom line, glad you had the extended warranty.
I think they made pretty good time to do all that work. Sure would be nice if they could tell what caused the failure...oh well at least it's repaired.
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  #19  
Old 10-04-2011, 07:51 PM
AdamG13 AdamG13 is offline
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Hey Gene - what kind of tint is that on your 7? Looks good. Similar to the S-class tint.
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  #20  
Old 10-05-2011, 05:45 AM
GeneJ GeneJ is offline
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The tint is made by Film Matrix it is called Marquise 32. It is a metallic tint, but i have no interference with the electronics. I have used this tint on 4-5 cars and never had a problem
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