Question about 1999 BMW 318 ti

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Bmw e46 316i 1.9 L (1895cc) M43B19 2001

The air breather pipe coming off the engine had a hole in it. I replaced it but I still have problems. I think it's the valve connected to the pipe.

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  • Paul Ryan Jun 11, 2008

    I sorted i by replacing the breather valve connected to it. Awkward trying to use an alan key where it is.

  • Anonymous Aug 17, 2008

    Had the same problem on my e46 and replaced the breather hose and valve - (now alright!) The problem started with a high pitced squeal - like a fan belt squeal ( HARD TO DIAGNOSE AT FIRST) my mechanic soon found out the problem - now fixed at a cost of £56 - BMW SYTNER (PARTS ONLY) i hope this helps someone?

    Regards
    Matt

  • justmaddog Sep 12, 2008

    I had a split in the breather hose which has just been replaced. The emissions light on the dash was extinguished follow a full diagnostic check but has now come back on, does this mean that i now have to change the breather valve also.



    Regards



    JM

  • Anonymous Feb 16, 2009

    I've just had to replace the same hose on my 2002 316i SE.
    It's called a CRANK CASE BREATHER TUBE and you are advised to do the Breather valve that it connects to at the same time.
    The cost is approx £55 for the two parts and will take a couple of hours to fit due to having to remove the pollen filter and housing etc above to make the job a lot easier to do.
    The hose that needs replacing (Crank case Breather) over time fills up with oil deposits (like tar) and blocks the tube causing the tube to **** together and cause the hose to wear / split etc.
    The hose is a two part hose that is glued to a thinner water hose (not a great design and increases part cost) - I did not want to change this hose as well as there was nothing wrong with the water system / hose so I just removed the rubber banding and pulled them carefully apart (this will save you time).

    By changing these parts my Engine light was reset and now stays off. :-)

  • Paul Ryan Mar 04, 2014

    The breather valve causes most of the problems

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I have a hose that is broke on my 316i but i need a dwawing of my engine to identify the part .

Posted on Feb 08, 2009

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Replacing the breather pipe is a temporary solution. The breather valve (cyclone separator) attached to it usually goes too. Awkward to get at with an alan key. The part is €50 in BMW. The pipe I replaced with some rubber tubing I had myself. It's working perfect now.

Posted on Jun 12, 2008

  • Paul Ryan Mar 04, 2014

    Normal tubing for this becomes porous in time

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