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1997 BMW 540i

Question: Timing chain and tensioner replacement

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SpeedG3, Peachtree City, GA, August 01, 2010, 18:54

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I have a clattering sound on my 1997 BMW 540i when accelerating it does it when hot or cold. No sound when running stedy at highway speeds 70 - 100 but when accelerating it starts again I replaced the plugs and changed the oil also the fuel filter nothing is helping to rid the noise also cleaned the MAF Sensor motor has 130+ miles starts great runs strong.

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• Answer #1

  dandd August 01, 2010, 19:17
  

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  Really need to do the whole chain at this mileage, the noise is also because the timing Chain is stretched. On 4.0 liter BMW V8s the chains wear out, I have personally been involved with a few, that is also why I only use Mobil One synthetic oil, because the Timing Chains last MUCH longer. The Chain is a huge job, book time starts at 23 hours and then there are other things to do. Best of Luck, a BMW can be costly to maintain.
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