Renault Scenic 2lt , rattly top-end?
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Thread: Renault Scenic 2lt , rattly top-end?

  1. #1
    Fellow Frogger!
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    Default Renault Scenic 2lt , rattly top-end?

    Just bought a Scenic RX4 to replace the kids dead car.
    The top-end is slightly rattly ?
    *Twin cam has Hydraulic tappets.
    Anyone had this ?

    Run a different oil?

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  2. #2
    1000+ Posts REN TIN TIN's Avatar
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    I used to have a bit of rattle occasionally in the Scenic, usually on start up but it went away after a few seconds.

    Is it just rattly when cold on start up or does it rattle all the time?
    If when cold a different oil might help. Check that the oil filter has a non-return valve.
    Could also be wear in the dephaser that could put the timing out slightly but this is more likely when it's at speed.
    A dirty TDC sensor could also affect the timing.


    But you're talking about a car that's what, 16 years old at least, so it's probably not going to be as smooth as one fresh out of the factory.
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    1000+ Posts cav91's Avatar
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    Most of the top end noise in these early scenics is the cam dephaser pulley. Inlet cam pulley go noisy. Often they sound like diesels!
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  4. #4
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    Yes that's the noise.
    Does it become terminal or just rattle til something else goes wrong?

    Can it be replaced without taking the head apart?
    Meaning unlock the cam bolt in situ and change the cog.

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    1000+ Posts REN TIN TIN's Avatar
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    If you can put up with it just leave it unless it becomes very noisy or is there most of the time.
    The noise should go away when the oil pressure builds up.
    You can replace the dephaser without dismantling the head but you have to remove the timing belt so you need the tools to lock the camshafts. Best to have it done the next timing belt change.
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    Are you using the correct oil spec?
    Having a 2003 Scenic 2.0 petrol, I was surprised at the heavy viscosity recommended compared to most other engines of that era.

    From the handbook: "For petrol engines, the engine oil should comply with ACEA A2 or A3, or with the standard API SJ grade 15W50 or SW50."

    Just a thought?

    Cheers.
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    Fordman,

    this was also my thought.
    Wrong oil.
    Have to do the gearbox boot when the part arrives.
    Figured i would use the thicker oil and change it then.
    Prolly has something in it now like cat's piss.
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    Moderator vivid's Avatar
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    The recycled RX4s are taking over!

    All 3 of my running RX4s sound like that until they warm up.

    David.
    Powered by high grade French plutonium.

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    Quote Originally Posted by Berridale View Post
    Just bought a Scenic RX4 to replace the kids dead car.
    The top-end is slightly rattly ?
    *Twin cam has Hydraulic tappets.
    Anyone had this ?

    Run a different oil?
    Is the family cat accounted for..?
    Every day when I wake up I reach up in the darkness with my eyes shut and if I cannot feel anything that resembles a wooden lid I know it will be a good day. No lid today.

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    Quote Originally Posted by 59 Floride View Post
    Is the family cat accounted for..?
    It was a rattle, not a yowl....

    I'll be interested to hear whether the oil grade change worked.
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    JohnW

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    National Co-ordinator, Renault 4CV Register of Australia

  11. #11
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    Will change it in a few days.
    Just thinking to replace the oil with "Gulf 20-50 for older engines" or something like that.

  12. #12
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    Can you determine just were the noise is coming from ,long screwdriver to your ear, if it is in the rocker cover and the oil dousnt work try some lifter ease ,pugs

  13. #13
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    Pugs,
    might use my wife's stethoscope .
    Laughs....

    You mentioned you changed the variator?
    How did you lock the variator/cog to undo the nut?
    Otherwise the new Scenic is good, wife not complained.

    Incredible car when released over 20 years ago.

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