Engine pinging problem when accelerating

Tiny
ROMEOM
  • MEMBER
  • 2008 BMW 750LI
  • 37,500 MILES
I have taken my 2008 BMW 750Li to the BMW Service Center 3 times for engine pinging problem during acceleration with negative results. Would you happen to have a fix for this? I have been using 91 octane from Shell or Chevron since I've owned the car. I've had this pinging / detonation noise coming from the egine during sudden acceleration since I bought the car in May 2010. The dealer preformed some sort of induction flush of the fuel system but it didn't help.
Monday, December 19th, 2011 AT 7:01 PM

11 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Have you tried adding higher octane fuel?
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Monday, December 19th, 2011 AT 8:00 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Also have the EGR valve checked if its opening
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Monday, December 19th, 2011 AT 11:18 PM
Tiny
ROMEOM
  • MEMBER
  • 4 POSTS
Using 91 octane fuel didn't help because I've been using it since I owned the car. Would the engine light come on if the EGR is mafunctioning?
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Wednesday, December 21st, 2011 AT 5:43 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Don't always rely on the CEL to give you a headstart-check the EGR valve operation
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Wednesday, December 21st, 2011 AT 8:49 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Pinging is KNOWN issue with your car and other BMWs did you change spark plugs?
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-1
Wednesday, December 21st, 2011 AT 10:57 PM
Tiny
DOCHAGERTY
  • MECHANIC
  • 9,603 POSTS
No EGR on BMW since 1979. BMW knows about the problem, they are not inclined to fix it. Had several of them at the stealer, oops, dealer do the same thing.
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Thursday, December 22nd, 2011 AT 2:54 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Merry Christmas guys-be safe and sound
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Thursday, December 22nd, 2011 AT 10:17 PM
Tiny
ROMEOM
  • MEMBER
  • 4 POSTS
Anymore suggestions/recommendations in regards to trhe engine pinging
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Sunday, January 8th, 2012 AT 2:51 AM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Add some octane booster?
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Monday, January 9th, 2012 AT 5:09 AM
Tiny
ROMEOM
  • MEMBER
  • 4 POSTS
Octane booster (Lucas brand) is not street legal. Anymore recommendations?
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Monday, January 16th, 2012 AT 6:54 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
FEAR the law?How they gonna know?
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Tuesday, January 17th, 2012 AT 12:55 AM

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