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Vibration of engine at lower speeds

Tiny
LAURAS325I
  • MEMBER
  • 2005 BMW 325I
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 190,000 MILES
When driving at speeds lower than thirty five mph engine vibrates. Computer indicated problem with valve number six.
Spark plugs and coil replaced. Problem continues. Plus, now I am getting hot air coming in at floor level. Maybe a hose got lose.
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Tuesday, August 1st, 2017 AT 7:41 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
Hello,

It sounds like you have low compression in cylinder number six. I would remove the plug and then flow this guide to get the job done. If you do not have a gauge you can rent one.

https://www.2carpros.com/articles/how-to-test-engine-compression

Please let us know what happens.

Cheers, Ken
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Wednesday, August 2nd, 2017 AT 3:14 PM

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