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Thread: how far to tighten glowplugs

  
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    vnip's Avatar
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    how far to tighten glowplugs

    Hi all again

    ive just changed my glowplugs in my 1.7 tdi astra van its a gm y17dt which takes the long glowplugs

    the only thing is that there is a 1cm gap between were the thread on the glowplug stops and the nut on the glow plug starts.

    should i tighten up to the top of the thread or to the bottom of the nut.

    just when i tighten em up it gets hard to turn em around the top of the thread area so i really dont want to tighten em down to the nut just in case i break em.

    i hope someone understands what i am going on about lol

    thanks people....

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    mfivebmw's Avatar
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    Hi,
    can't you tell by the old plugs?

    Dave.

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    hi

    to be completely honest i didnt think to check till i got to the last on then i realised what was happening..

    thanks for your reply

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    Quote Originally Posted by vnip View Post
    Hi all again

    ive just changed my glowplugs in my 1.7 tdi astra van its a gm y17dt which takes the long glowplugs

    the only thing is that there is a 1cm gap between were the thread on the glowplug stops and the nut on the glow plug starts.

    should i tighten up to the top of the thread or to the bottom of the nut.

    just when i tighten em up it gets hard to turn em around the top of the thread area so i really dont want to tighten em down to the nut just in case i break em.

    i hope someone understands what i am going on about lol

    thanks people....
    Hi there,

    Never installed glow plugs myself but info I have says to tighten to 17.5Nm (13 ft-lbs) if that helps...

    Cheers, Paul

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    As long as they are tight and all connected properly they will still work, even if they are not in as far as the old ones.

    All that could happen is that it might not be as hot as it might be if they were right down in the head.
    If you over tighten them and snap one off, then it could be head off time, and big money.

    Dave

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    thank you everyone for all your help.


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    is there a how to to change the glow plug?

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    buy a torque wrench and a haynes manual (they have a list of torque settings for almost everything).

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