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Thread: X20XEV Tapping Noise

  
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    MarkySRi's Avatar
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    X20XEV Tapping Noise

    i have an astra SRi with the X20XEV engine in.

    a few months ago the flexy on the front pipe snapped so i changed it and ever since its been making a tapping noise similar to tappets.

    now im a mechanic and i know the X20XEV has a common problem with the exhaust manifolds cracking so i've fitted a brand new one of them and the noise is still there.

    so then i thought one of the valves had burnt out cause it was losin compression on cylinder 2 so i put a new head on it and the noise is still there.

    all the gaskets are new and all the surfaces were clean and flat.

    im really stumped now cause its startin to cost me.im considerin doing a full flush and oil change to see if any deposits have been picked up and become stuck in one of the tappets.

    ne1 else got ne ideas cause its startin to do my head in

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    anyone have any ideas?

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    personally an engine oil change would be my first thoughtm, ive got a weird sorta nock/tap on my x20xev and been trying to find exactly what it is for age if you find anything, ill be keeping a watch

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    done the flush and oil change last nite and still the noise is there.

    took the induction kit off tonite and fitted the airbox back on and the noise has got slightly quieter found a gas leak on the exhaust so im going to reseal that and sort that see what happens.

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    sorted the blowing exhuast and the noise is still there.

    whilst i was under the car i could hear the noise resonating down the front pipe which suggests to me that a exhuast tappet has given up.but i want a second opinion before i do anything

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    Quote Originally Posted by MarkySRi View Post
    i have an astra SRi with the X20XEV engine in.

    a few months ago the flexy on the front pipe snapped so i changed it and ever since its been making a tapping noise similar to tappets.
    If this noise only started since you carried out the above work i would have to say it must be exhaust related, either a faulty replacement or gasket seal.
    HIGHDOWN Car Audio & Security
    Clifford, Genesis, Rockford, CDT Audio

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    well thats what i mean i dont know if it was happenin before because the noise from the exhaust couldve been drownin it out.

    i had it in at work today and 3 of us are pretty confident that its the tappets exhaust number 3 to be exact.so i ordered a new set of tappet for it and will fit them when they arrive and hopefully the noise should go.

    if not least i know i got a gd top end engine.lol

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