Timing rattle on cold start?

Discussion in 'Engine, Gearbox, Exhaust and Air Intake' started by 19Zen, Oct 16, 2019.

  1. 19Zen

    19Zen

    Messages:
    39
    Location:
    Bucks
    Car:
    197
    Hey guys,

    I've noticed as the weathers become colder that I have a rattle/chattering sound on idle from behind the timing cover on cold starts, as soon as the engines warm the noise reliably disappears. The engine runs nice and smoothly, my only thought is that it's the dephaser pulley as I had the timing belt and water pump changed last year without the dephaser.

    I've had a search around forums and can't pinpoint anything, just thought I'd ask as this is the most active/knowledgeable place regarding the Mk3 RS.

    Thanks in advance for any thoughts...
     
    Sean197 and Phenom like this.

  2. Phenom

    Phenom Paid Member

    Messages:
    53
    Location:
    West Sussex
    Car:
    Glacier White FF 200 Cup
    I would also vote on the dephaser if you had timing etc done but not the dephaser. seen a couple threads about here and maybe cliosport talking about a rattle from a dephaser.

    Someone more knowledgeable might be able to shed more light on it though
     
  3. lewishunter98

    lewishunter98 Paid Member

    Messages:
    594
    Location:
    Southampton
    Car:
    Racing Blue Clio 197
    Supposedly the 197/200 dephasers don't suffer from the issues that the 1*2's did! Though saying that I wouldn't rule it out completely

    Sent from my ONEPLUS A5010 using Tapatalk
     
    Phenom likes this.
  4. 19Zen

    19Zen

    Messages:
    39
    Location:
    Bucks
    Car:
    197
    The main reason I didn’t change the dephaser is reading that it’s not prone to issues like the 172/182. It does sound like it’s from the top of the timing area but could be the sound bouncing, I’ll keep an ear on it and remove the cover when I have the time to try and confirm.

    I came across this post which made me wonder whether it could’ve been the aftermarket camshaft sensor I fitted affecting the valve timing on startup. The parts box was marked with a Renault symbol although the head of the sensor was slightly different, similar to this Bosch sensor. I swapped for the original sensor and it still made the noise on startup, although perhaps it would need a few starts and some running for the ECU to relearn if there is any difference between the sensors.
     
    Phenom likes this.
  5. Dn197

    Dn197 Paid Member

    Messages:
    1
    Car:
    09 R27
    Hi Guys,
    My 197 had the same issue, seemed to happen only when the car was parked nose down (even slightly) but only ever happened for a second or two then the car was fine. Also didn't seem to affect power at all.

    Just had the belts done two weeks ago with a new dephaser and noise is totally gone. This noise is coming from the dephaser.
     
    Foxspeed likes this.

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