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Thread: whats that ticking/knocking sound??

  
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    BlueBuddha's Avatar
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    Question whats that ticking/knocking sound??

    evenin all!



    when i start my car (Astra Envoy1.6 8v) it sometimes makes a rhythmic ticking/knocking sound from under the bonnet. after i've pulled away and gone about 100 metres its gone!


    any help?


    thanks


    Matt
    404 error - witty signature not found

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    GB's Avatar
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    probably just the tappets on start up - u gotta remember all the oil is down in the sump when left for a long period of time - fire it up and it'll take a few seconds to get the oil circulating and lubricating all the relevant components.

    Might be advisable to determine where the noise is coming from with the bonnet open.

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    DrewWhelan's Avatar
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    Had the same problem myself last year, didn't think to check the oil as it had only been serviced 3 months before.

    Speaking to a mechanic he checked and found it dry as a bone and he reckoned that dealers "just use cheap shit and charge full price" which is why it had burnt off so quickly.

    Bought some castrol and that's lasted me the last 9 months.

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    Maskell's Avatar
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    If you have an aftermarket air filter then have you secured all the old clips/sensors? I have seen several people complain of knocks when it's just these knocking the bonnet on tickover!


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    first check your oil level - if its fine on the good old 1.6 8v as a fellow owner, its normal particularly when starting cold, as long as it goes away after a few yards or so

    Its just the lovely oil lubing up and moving around to the dry bits.

    Sounds a bit like a machine gun (but a very crap one) .

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