Cambelt/Checking for Oil Leak?

Discussion in 'Engine, Gearbox, Exhaust and Air Intake' started by Rishi, Sep 4, 2018.

  1. Rishi

    Rishi Platinum Member

    Messages:
    561
    Location:
    NWLDN
    Car:
    197 Cup Albi Blue
    Hey guys,

    Just looking for a bit of advice on solving an oil leak while my cambelt is being replaced. I've noticed the undertray always has oil on it but can't be a major leak as the level on the dipstick is quite stable.

    When I have a look on the ramp the back of the engine looks moist and at the front there does seem to be some oil coming from higher up then gathering around the sump. The cam cover bolts I can see are fine so I'm thinking it may be the cam cover itself leaking.

    I'm having the timing belt replaced soon and will be having the cam seal kit replaced, I'm just wondering if there's anything I should ask my mechanic to look out for when it's all being stripped down?

    Thanks for any tips!
     
    Last edited: Sep 4, 2018

  2. tcw

    tcw Paid Member

    Messages:
    173
    Location:
    Chelmsford
    Car:
    Clio 197
    I know the sump gaskets leak, not so sure about cam cover - iirc there's no gasket but loctite/sealant used to do that - if the person hasn't done one (or similar) before then I would take it to a specialist. NW London is relatively close to Engine Dynamics.
     
    Rishi likes this.
  3. John Gordon

    John Gordon Paid Member

    Messages:
    140
    Location:
    Amsterdam
    Car:
    Renault Clio R27 F1
    I recently did my cambelt and I noticed the same. The front of my engine was saturated with oil and the undertray was covered.

    I cleaned the whole lot with a few can's or carb clean and I've run it since. The only leak I've got is a bolt on the rocker cover.

    The rest of the oil was overflow from people filling the engine, dribbling it down the filler neck and it pooling in the inlet manifold and then being blown all over.
     
    Rishi likes this.
  4. Rishi

    Rishi Platinum Member

    Messages:
    561
    Location:
    NWLDN
    Car:
    197 Cup Albi Blue
    I'm having the cambelt done @ bucksautomotive, thinking it may be a good idea to have the cam cover removed & resealed at the same time regardless as it's a belt off job. There def seems to be oil coming from higher up but I'll give the sump a good clean next time it's on the ramp and keep an eye on it.

    I just had a look around the inlet manifold and could see a coating of oil on both sides (below oil filler and near dipstick), removed the upper manifold to have a clearer look and found pools of oil which seem to have originated from one of the cam cover bolts. All the bolts which were visible weren't leaking, goes to show it's worth having a look under the upper part of the manifold. :wink:

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    Last edited: Sep 5, 2018
  5. John Gordon

    John Gordon Paid Member

    Messages:
    140
    Location:
    Amsterdam
    Car:
    Renault Clio R27 F1
    I just call it Renault built in Anti Corrosion protection.
     
    Rishi likes this.
  6. Rishi

    Rishi Platinum Member

    Messages:
    561
    Location:
    NWLDN
    Car:
    197 Cup Albi Blue
    Giving a quick update on the oil leak - 2 cam cover bolts were weeping but the main leak appears to have been from the camshaft position sensor.
     

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