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    Thread: E46 M3 preventive maintenance question

    1. 10-09-2012 03:46 PM #1
      I did not want to interrupt the E36 thread with off topic questions. So, I'll ask it here; What are the preventive maintenance items that should be looked out for when purchasing an e46 M3? Besides the subframe welding issue, what else should be looked for? Suspension refresh kit?


    2. 10-09-2012 03:55 PM #2
      Your best approach by far would be to find a good local indy BMW mechanic and ask him. Then use him for a thorough PDI when the time comes.

    3. Geriatric Member ATL_Av8r's Avatar
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      10-09-2012 03:56 PM #3
      Up to production date 10/01 there was a recall on connecting rod bearings.

      Also ask for service records for oil changes and note that Castrol TWS 10w-60 was used and that interim oil changes were made between the "free scheduled maintenance" BS every 15k.
      Last edited by ATL_Av8r; 10-09-2012 at 03:59 PM.
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      10-09-2012 04:43 PM #4
      http://forums.bimmerforums.com/forum....php?t=1468749
      Here is a link to the Bimmerforums "Everything you should know before buying a E46 thread"
      I used a similar guide to buy my E36 M. Still had a PPI done, but this allowed me to ask the right questions and find a car that was well taken care of.
      -WaterCooledMilitia-

    5. 10-09-2012 04:52 PM #5
      Quote Originally Posted by ATL_Av8r View Post
      Up to production date 10/01 there was a recall on connecting rod bearings.

      Also ask for service records for oil changes and note that Castrol TWS 10w-60 was used and that interim oil changes were made between the "free scheduled maintenance" BS every 15k.
      Thanks it looks like ECS has that oil change kit here.

    6. Geriatric Member absoluteczech's Avatar
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      10-09-2012 05:04 PM #6
      depending on miles make sure the valve adjustment was done and has been done

    7. Member zmt's Avatar
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      10-09-2012 05:04 PM #7
      S54 needs periodic valve adjustments. Plan on doing one right when you get the car for peace of mind.

      There's also been multiple instances of the intake side VANOS camshaft bolts backing out/shearing which can nuke the engine. No idea of failure rates, and if I can grow a pair I'm going to check mine out when I do my valve adjustment.

    8. 10-09-2012 06:43 PM #8
      Quote Originally Posted by zmt View Post
      S54 needs periodic valve adjustments. Plan on doing one right when you get the car for peace of mind.

      There's also been multiple instances of the intake side VANOS camshaft bolts backing out/shearing which can nuke the engine. No idea of failure rates, and if I can grow a pair I'm going to check mine out when I do my valve adjustment.
      Are the periodic valve adjustments a DIY item?

    9. Geriatric Member absoluteczech's Avatar
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      10-09-2012 06:45 PM #9
      Quote Originally Posted by Remedy View Post
      Are the periodic valve adjustments a DIY item?
      if youre skilled and have the right tools (shims, etc)

      http://bit.ly/VXF1vI
      Last edited by absoluteczech; 10-09-2012 at 06:48 PM.

    10. Member zmt's Avatar
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      10-09-2012 07:12 PM #10
      Quote Originally Posted by Remedy View Post
      Are the periodic valve adjustments a DIY item?
      If you have a garage and can either buy the shim kit and tool, or if you have the time to order the specific shims you need, sure! Once you have the valve cover off it's really nothing more than removing pucks/measuring/replacing pucks.

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      10-09-2012 07:34 PM #11
      a ppi is a must. the more service records, the better!
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    12. 10-09-2012 10:04 PM #12
      Quote Originally Posted by zmt View Post
      If you have a garage and can either buy the shim kit and tool, or if you have the time to order the specific shims you need, sure! Once you have the valve cover off it's really nothing more than removing pucks/measuring/replacing pucks.
      Hmm... It sounds like a person would have their work cut out for them with an e46 M.

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      10-09-2012 11:09 PM #13
      Valve adjustment is definitely DIY-able for any semi competent. It looks more intimidating than it is. BMP design has a couple of videos on youtube I basically used exclusively for my directions on how to do it.

      If you still think it's over your head, should only be 4-5hrs at an indy shop (not bad every 30k or so, if you ask me)
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      10-09-2012 11:21 PM #14
      OP, are you kidding me? This stuff is incredibly well-documented on the internet. By this point, we know virtually everything about the E46's weak points.

      This checklist took me less than 10 seconds to find via Google:

      http://edgemotorworks.com/wordpress/...ing-m-edition/
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      10-09-2012 11:38 PM #15
      If you want to really learn about an E46M there are much better places to spend your time than here.

      If you are going to daily drive this car and are looking for cheap transportation it probably isn't the best choice.

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