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My A3 horrible engine rattle, video inside. Cam chain?

Discussion in 'A3/S3/Sportback (8P Chassis)' started by JJ.Foulds, Mar 14, 2014.

  1. JJ.Foulds

    JJ.Foulds Well-Known Member

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    So after my oil pressure warning light, to an oil pick up pipe change, to then another oil pressure light, to a pressure test which came out totally perfect. Im left with a terrible rattle which the mechanic spotted for me but i didnt have the money to investigate it more.

    Soo about the noise.

    -> Its only there when the engine is cold, and will dissapear at a random time after driving a bit. Within this time is when the oil pressure light may appear.
    -> I can just feel it in the clutch pedal when depressed by say an inch.
    -> It sounds like its coming from somewhere around behind the cam follower and within the next 2 spark plug to the left area of the engine

    https://www.youtube.com/watch?v=Fp4dwsGge54

    I was trying to feel for it and you can feel it just.

    did the low oil pressure from the pick up being blocked cause the chain to stretch?
    Does the Tentioner reset after engine off/cold?

    Thanks for the help.
    JJ.
     
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  3. Marshy

    Marshy Settled in
    Audi RS3

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    Sounds like its from the cam chain area but it sounds pretty poorly.
    What grade of oils in it now?
    Just wondered if it had thicker oil in to help oil pressure.
    This being too thick to properly circulate when cold?
    Does sound like its starved of oil at the top end though.
     
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  4. JJ.Foulds

    JJ.Foulds Well-Known Member

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    not sure what oil was used. i will ask and find out.

    But the pressure test came back at 45psi at idle and 60psi while running, which is a tad high i think it should be 55?
     
  5. JJ.Foulds

    JJ.Foulds Well-Known Member

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    little bump, for any more idea's or input?

    THanks.
     
  6. Artimus

    Artimus Shortback

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    Another vote for wrong grade of oil ...it being a cold start only issue is the clincher
     
  7. JJ.Foulds

    JJ.Foulds Well-Known Member

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    Right i will be ringing him on monday to ask, what grade of oil should it actually have in it?

    Thanks.
     
  8. warren_S5

    warren_S5 Moderator
    Staff Member Moderator VCDS Map User

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    My god, that sounds terrible.

    My concern would be that oil isn't making its way to the head of the engine. Is there an oil pump in these engines that lifts the oil to the head, and if so could it be blocked (hence why it sounds so bad when cold / just started). You'd expect the oil to move about a bit when it's thinned, but there is something definitely not right there, I'm not sure it's only wrong oil....
     
  9. JJ.Foulds

    JJ.Foulds Well-Known Member

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    Just a quick update to which i get an 'oil pressure light' warning.

    Say im overtaking 2 cars on a straight, starting at 3k revs right to 6k and changing gears.
    Then i pull into the road go round the roundabout and the light comes on.
    So i switch the engine off (while driving still) and let it back into 6th gear and 5 seconds later the light comes on, however it will go off if i place into a higher gear to say at 3k revs instead of the 6th gear at around 1500 rev.

    I think its the cornering after the flooring that causes this problem? any ideas?

    ALSO im going to do a DIY oil change just need some comfirmations that castrol 5-30 is the correct oil to put in?

    Thanks.
     
  10. Turbo jay

    Turbo jay Leather repair specialist

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    Yea castrol edge 5w 30 is the correct oil mate.
     
  11. Artimus

    Artimus Shortback

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    Baffles in the sump should stop the oil sloshing to one side when cornering ...but you should have changed it already anyway! it won't do your engine any good running it like that.
     
  12. JJ.Foulds

    JJ.Foulds Well-Known Member

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  13. JJ.Foulds

    JJ.Foulds Well-Known Member

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    il just post a new thread aha ;)
     

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