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Thread: Pinking

  
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    Pinking

    Hiya,

    Does anyone have any advice please? I've recently bought an 05 Astra SRI 1.7Cdti x pack (love it!), and there seems to be a 'pinking' noise from the engine when going uphill, or if labouring slighty. Does anyone know what this could be? Also, when I first start it in a morning there is a loud rattle from the right hand side of the engine for a few minutes (I know it's a diesel and it's supposed to rattle but this is not normal engine noise.) Any ideas anyone?

    Also, I'm having an oil change this week, any ideas on the best type of oil to put in, I do quite a bit of mileage each week.

    Thanks!

    Lisa.

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    astracolli's Avatar
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    Are you doing the oil change? yourself i assume?

    and could you explain the 'pinking' noise a bit more? lol


    Vectra SRi 1.9 CDTi (150).
    Tinted Windows, Richbrook Gear Knob & Tax Disc Holder.
    Flip down sunglasses Holder.
    6000K HID's, Chilled Glovebox, CD70 Navi, Debadged, Samco Hoses.


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    Thanks for your reply, I'll try to be a bit more specific. The noise is almost a fluttering, rattling, pinking type noise (not explaining myself very well am I?!) when going uphill or even a slight incline. I have to drop it down a gear and increase revs to get it to stop. Fuel economy is good so no problems there. Hopefully unrelated but I've had to top up the coolant twice in six months and I read on here that it shouldn't really use any coolant unless there's a problem.

    And yes, we'll be doing the oil change ourselves.

    Thanks

    Lisa.

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    Okie dokey!
    First things first Oil:
    5w - 30 Synthetic.

    And how many miles are you doing when you say a few a week?


    Vectra SRi 1.9 CDTi (150).
    Tinted Windows, Richbrook Gear Knob & Tax Disc Holder.
    Flip down sunglasses Holder.
    6000K HID's, Chilled Glovebox, CD70 Navi, Debadged, Samco Hoses.


  5. #5
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    About 300 miles a week on average.

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    Hokey kokey!

    On the strange noise it may, be a few things i do believe!
    you could have something loose possibly and when you drop it down and boot it etc the engine could just be noisier then the rattle drowning it out.

    Have you looked under the bonnet when you start it up and seen if its anything obvious like a loose mounting or somethink similar?


    Vectra SRi 1.9 CDTi (150).
    Tinted Windows, Richbrook Gear Knob & Tax Disc Holder.
    Flip down sunglasses Holder.
    6000K HID's, Chilled Glovebox, CD70 Navi, Debadged, Samco Hoses.


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    Yeah, there's nothing obviously loose. I think I'll get it in the garage and get them to have a look. Thanks for the advice though, apologies for the vagueness!

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    No Probs, Probs be others along who might have a better idea a bit later!

    One final thing:

    Welcome to the club!


    Vectra SRi 1.9 CDTi (150).
    Tinted Windows, Richbrook Gear Knob & Tax Disc Holder.
    Flip down sunglasses Holder.
    6000K HID's, Chilled Glovebox, CD70 Navi, Debadged, Samco Hoses.


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    Thanks for the welcome! I've got alot of reading to do! My OH has a 52 Astra 1.8 Elegance so he'll be logging on too I expect.

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    Diesels are not subject to pinking as in petrol cars where knock sensors are deployed to retard timing. It may be a fuel injector that is failing or possibly an incorrect valve clearance.

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