Loud ticking noise at Vanos End of head ( increases with speed )

Discussion in 'E36 M3 (1991-1999) and E30 M3 (1986-1990)' started by Richy C, Jul 14, 2019.

  1. 14 Jul 2019 at 11:48 AM #1
    Richy C

    Richy C A mere Chipper

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    Hi all

    Car is a 3.0 1994. I have just put back the cam cover after getting it repainted, and now I have this loud ticking sound coming from the Vanos end of the head. Im sure this noise was not there before taking the cover off. The ticking increases with engine speed. Any ideas?
    I will upload a video when i can wotk out how to do it!!

    Cheers!
     
  2. 14 Jul 2019 at 3:21 PM #2
    NZM3AN

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    It's all guesswork at the moment, did you have the cams and timing case covered whilst you got the cover painted?

    For videos, upload them to Google Drive or YouTube and post the link here.
     
  3. 14 Jul 2019 at 3:24 PM #3
    GolfDuck

    GolfDuck Staff Member Moderator

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    Or use the "media" tag in the reply box :)
     
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  4. 14 Jul 2019 at 4:03 PM #4
    Richy C

    Richy C A mere Chipper

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    Ok, here we go.


    I had the cams and timing chains etc covered with soft clean cloth during the time the cover was off.
     
  5. 14 Jul 2019 at 5:01 PM #5
    NZM3AN

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    That's crazy, what happens if you pull the vanos electrical connectors?
     
  6. 14 Jul 2019 at 10:25 PM #6
    Iain

    Iain Staff Member Moderator

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    try loosening the cam cover bolts. the cam lobe can catch on the casting, it normally happens when your running bigger cams but with a thin gasket and depending on the casting it can happen, and takes only a few minutes
     
  7. 15 Jul 2019 at 12:22 PM #7
    MParallel

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    ^^
    Wow if that is true (well I take your word for it) then that's quite a design flaw.
     
  8. 15 Jul 2019 at 1:18 PM #8
    Iain

    Iain Staff Member Moderator

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    had it on mine (with a bigger cam to be fair) clearance is very tight where the studs for the coils comes through. mine was knocking on cyl 6 went away once hot as the alloy expands. if an aftermarket rocker cover gasket is used they are a bit thinner imo, so with a thinner gasket and a rough casting i can see it happening on an oem cam.

    Had the same issue when i put some washers on the bolts to try and increase the clamp on the gasket.
     
  9. 15 Jul 2019 at 2:43 PM #9
    Richy C

    Richy C A mere Chipper

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    Cheers for all your replies!

    Ok, I loosened off the bolts but the noise was still there. I am using a new victor Rienz gasket. Would they be thin compared to an original BMW gasket? Do you think i should change to an original one?

    I assume that car cannot be driven like that?
     
  10. 15 Jul 2019 at 4:10 PM #10
    Iain

    Iain Staff Member Moderator

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    Depends whats making the ticking noise to be honest, seems coincidental that it should happen after the cover was off. i would stip it all off and have a good look, check the cover carefully for any signs of contact with anything (check carefully marks will only be slight) mae sure all shims are seated, nothing is loose, the ground strap isn't stuck under the cover (done that myslef) if its all A1 re assemble and re test. After that your likely looking at some sort of vanos or solenoid fault.
     
  11. 15 Jul 2019 at 9:23 PM #11
    Richy C

    Richy C A mere Chipper

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    Ok, sounds like a plan. Will get cracking tomorrow and see what i find. Thanks for your advice!

    I did have the cam cover powder coated. Is it possible it got a bit misshaped during the process which has caused the issue? Not sure what temperature they heat the metal up to..
     
  12. 15 Jul 2019 at 9:59 PM #12
    NZM3AN

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    Unplug your VANOS before you take the lid off again... it'll take like 30 seconds to check whether that's where the noise if coming from or not.
     
  13. 15 Jul 2019 at 10:24 PM #13
    Richy C

    Richy C A mere Chipper

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    Ok, ill do that first. I am not sure how to unplug it though. Can you let me know how to do this. Thank you!!
     
  14. 15 Jul 2019 at 11:01 PM #14
    NZM3AN

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    Just disconnect the electrical connector to the VANOS (I think there's only one on the 3.0) and start the car. It may run rough but you're only wanting to see if the noise is still there. If the noise stops then you may have a dodgy VANOS solenoid. You may learn nothing but it's easy and worth a try.
     
  15. 16 Jul 2019 at 12:40 AM #15
    Iain

    Iain Staff Member Moderator

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    there are two on the 3.0, one for each solenoid, they are under the black plastic cover on the front of the engine, just trace the wires from the solenoid cover.
     
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  16. 16 Jul 2019 at 7:45 PM #16
    Richy C

    Richy C A mere Chipper

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    Ok, the bracket that holds the top electrical connector was rusted to bits! So when I tried to unscrew the nut holding the plastic cover on it snapped the bracket in half almost and would not unscrew.. So another job to sort out. Do you know if those brackets are bolted to the head or part of the vanos unit? As a result of this I have run out of time so will have to get back to it tomorrow.

    Thanks for your continued help on this
     
  17. 16 Jul 2019 at 8:05 PM #17
    Iain

    Iain Staff Member Moderator

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    its just a bit of steel, mine was fucked also, it just un-bolts. i don't recall the replacement being expensive
     
  18. 16 Jul 2019 at 8:18 PM #18
    Richy C

    Richy C A mere Chipper

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    Thanks!! Well thats some good news. Where do you get your parts from? I have had a quick look on RealOEM and cant find the part / part number. I imagine you can only replace it with the vanos off.
     
  19. 16 Jul 2019 at 8:28 PM #19
    Iain

    Iain Staff Member Moderator

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    you dont have to remove anything other than the bracket, i bought it from bmw.
     
  20. 16 Jul 2019 at 8:34 PM #20
    Iain

    Iain Staff Member Moderator

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