To 4 cylinder M40 owners - Read this if your top end is tapping

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  1. To 4 cylinder M40 owners - Read this if your top end is tapping 
    #1
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    My M40 316i has since the service I gave it 300 odd miles ago, started to sound very tappety.
    I fix this today and it took less than 45 mins.
    I removed the cam cover and the plastic cover over the camshaft, then removed the 8mm bolt at each end of the oil spray bar and the 13mm banjo bolt from the middle.
    There is 8 small holes in the spray bar which allows oil to be sprayed directly onto the cam lobes, these holes on mine were blocked so I pushed a piece of wire from my wire brush through them each.
    Next I cleared it through with aid of an aircompressor and got some sludgey oily yogart residue out.
    Re-assemabled it and started the motor up and ran it till it was warmed and the tappety noise has gone.
    Result.
     
     

  2. The Following 7 Users Say Thank You to plumb For This Useful Post:

    E36 lover (20-09-2011),Ian S (06-09-2009),mess (06-09-2009),Nik-Gnashers (06-09-2009),RYM (05-09-2009),steve23002 (06-09-2009),SteveyBoy (11-02-2010)

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    Thanks Plumb, Moved to the "How To/Guides" section
     
     

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    Excellent write up Plumb, i did this on my last engine, exactly as you described, got the oil flowing but the damage was already done


    Women are like fairground rides..... fu*king mental!
     
     

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    Quote Originally Posted by plumb View Post
    My M40 316i has since the service I gave it 300 odd miles ago, started to sound very tappety.
    I fix this today and it took less than 45 mins.
    I removed the cam cover and the plastic cover over the camshaft, then removed the 8mm bolt at each end of the oil spray bar and the 13mm banjo bolt from the middle.
    There is 8 small holes in the spray bar which allows oil to be sprayed directly onto the cam lobes, these holes on mine were blocked so I pushed a piece of wire from my wire brush through them each.
    Next I cleared it through with aid of an aircompressor and got some sludgey oily yogart residue out.
    Re-assemabled it and started the motor up and ran it till it was warmed and the tappety noise has gone.
    Result.

    Got it sorted then mate.....
     
     

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    Quote Originally Posted by plumb View Post
    My M40 316i has since the service I gave it 300 odd miles ago, started to sound very tappety.
    I fix this today and it took less than 45 mins.
    I removed the cam cover and the plastic cover over the camshaft, then removed the 8mm bolt at each end of the oil spray bar and the 13mm banjo bolt from the middle.
    There is 8 small holes in the spray bar which allows oil to be sprayed directly onto the cam lobes, these holes on mine were blocked so I pushed a piece of wire from my wire brush through them each.
    Next I cleared it through with aid of an aircompressor and got some sludgey oily yogart residue out.
    Re-assemabled it and started the motor up and ran it till it was warmed and the tappety noise has gone.
    Result.

    The sad thing is if you take it to a Stealer they'd tell you you need a new head and a grand lighter in the pocket
     
     

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    this used to be a problem with the old sd1 rovers i used to do the same fix on them then which always worked never did it on a bmw though sounds like a good result there.
    maybe this is caused by inferior oil, late oil changes and not flushin the engine regularly, might be something to look at in the future.
     
     

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    I have a 320td - does the above guide still apply?
     
     

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    did this trick on my e36 today worked a treat thanks for the sound advise cheers .mark
     
     

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    our friends in the US seem to suffer from serious sludging of the engine problems worth keeping an eye on breather hoses etc and serviced regular with quality oil..
    330i sport a big chunk of berlin...

     
     

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    Hi Guys,

    Will this work on my 318is (M44?) i hear a metallic sound when the engine is cold around 2k revs, i presumed it to be the tappets but this sounds like its worth a shot.

    Thanks in advance
     
     

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