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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 11-23-2012, 06:25 AM
Mass7 Mass7 is offline
Mass7
Location: Massachusetts
 
Join Date: Jul 2008
Posts: 22
Mein Auto: 2012 740i
Blue Smoke from 740i

While driving my 2012 740i home last evening, the car notified me that I was low on oil and needed to add a quart as soon as possible. I drove another mile to a stop sign and noticed the car was shaking slightly. Drove another 4 miles, to the next stop light, and the shaking was considerably worse. Drove 3 more miles to my house, parked the car for 15 minutes, and when I started the car again, the car shook even worse, idle was very rough and the car exhaust was blue smoke. The car has only 7,250 miles on it (I took delivery in May 2012). It needed to be flatbed towed to the dealer this morning. Smoke was as bad this morning when I pulled it out of the garage. No word yet from the dealer. Has anyone else experienced this problem? I will keep everyone posted on the prognosis.
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  #2  
Old 11-23-2012, 09:21 AM
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ChrisF01 ChrisF01 is offline
Gib mir Feurschutz!
Location: SoCal (West LA & IE), Detuschland
 
Join Date: Aug 2012
Posts: 1,094
Mein Auto: 2013 750i
It's a sign you're burning oil, mine hasn't (*knock on wood*).

Good luck!!
Chris
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  #3  
Old 11-23-2012, 09:32 AM
Emilner Emilner is offline
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Location: LI, NY
 
Join Date: Aug 2010
Posts: 1,316
Mein Auto: 2013 SL63
Sounds like an internal engine problem. Blue smoke is oil in the combustion chamber- that's not something a sensor malfunction can accidentally trigger- like your engine shudder...
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  #4  
Old 11-23-2012, 01:55 PM
Mass7 Mass7 is offline
Mass7
Location: Massachusetts
 
Join Date: Jul 2008
Posts: 22
Mein Auto: 2012 740i
Initial Diagnosis

BMW service just called and they think it is a bad fuel injector. They will not know for sure until Monday once they take it apart. Worst part, they do not have any loaner cars available.
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  #5  
Old 11-27-2012, 08:35 AM
Mass7 Mass7 is offline
Mass7
Location: Massachusetts
 
Join Date: Jul 2008
Posts: 22
Mein Auto: 2012 740i
Final Fix

So here is what was done at BMW to fix the car:
  • replaced 6 fuel injectors
  • replaced fuel pump
  • replaced all 6 spark plugs
  • changed oil and filter

BMW said the oil was contaminated with gas due to the bad injectors, so they needed to change the oil and filter. They did not know which injector was bad so they replaced them all.

No reason for problem, it just happened.

I am going to pick up the car this afternoon.
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  #6  
Old 11-27-2012, 01:39 PM
cmpcpro cmpcpro is offline
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Location: SoCal
 
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Mein Auto: Nothing
Hopefully no damage was done to internals if the gas watered down the oil..
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