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Thread: how do i change the glow plugs

  1. #1
    Regular Member tim wood's Avatar
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    Default how do i change the glow plugs

    i think i need to change the glow plugs on my 2.2dti does anybody have any advice on where they are and how easy they are to change etc? thanks

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    Regular Member Green Growler's Avatar
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    Fairly easy job to do, but do be aware that this engine in the Vec B has been known to have glow plugs snap off in the head when people try to change them.
    Just be aware of this before you go jumping in and change them yourself.
    If you are not confident you can cope with changing them then get someone who is to do it for you.
    If you snap one, you MAY end up having to take the head off, and possibly have a helicoil fitted if the thread in the head is damaged taking the remains of the old plug out.
    Don’t let me scare you and put you off, it is really just pot luck weather they come straight out or are really tight.
    You’ll find them on the rear side of the engine, with leads attached to them and will look very similar to a spark plug and lead.
    The leads are clipped on, squeeze them in the right place to release them, do not force them or you’ll break the lead.
    You’ll need to take the black plastic cover off the top of the engine to get to them all.
    And you may find taking the top boost hose off will give you more room as well.
    Make sure the socket is on the plug square, not at angle or you’ll increase the risk of snapping them.
    Don’t jerk the ratchet, be smooth and using even force to undo them.
    You MUST use a torque wrench to do them up, do NOT over tighten them. (or they will be more likely to snap next time)
    Also, use some copper grease on the threads before you fit them.

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    Regular Member tim wood's Avatar
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    you say on vec b is this the same for mine as mine is a vectra c? do you have to torque them up as i have always just tightned just a bit tighter than hand tight with a ratchet?

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    Regular Member TKD Colin's Avatar
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    definately be cautious with removing glow plugs........


    my car is in the garage right now with the head off because of two snapped glow plugs


    I miss my baby she has been gone for three days already.

  5. #5
    Regular Member Green Growler's Avatar
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    Yep, basically the same engine, minor differences, but in terms of glow plugs identical, and they have a track record of seizing.
    The older the car, and the higher the mileage the more likely this is, and of course if they were over tightened when fitted.
    Yes, it is VERY advisable to torque them of correctly, not just by feel, I can't remember the figure off the top of my head, but when I changed mine the new plugs had the setting written on the box. (NGK plugs not Vx ones, though I don’t know who makes em for Vx)

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    Regular Member tim wood's Avatar
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    okay is it best to give them a squirt with wd40 and leave it for half an hour before removing them. what glow plugs would you advise? thanks

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    Regular Member Green Growler's Avatar
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    Yes, sorry I forgot that tip, won’t do any harm at all to give them a good soak with the WD before you try to undo them.
    Just price up plugs local to you, try Vx and try a local motor factors, and get whichever is cheaper, I would stick to a known name to plugs though, rather than a cheap eBay set, my local motor factors supply NGK (very good quality plug) but yours may be different. Any known quality brand is fine, NGK, Champion, Bosch, ETC.

  8. #8
    Regular Member tim wood's Avatar
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    okay no prob thanks for you help i mite atempt it tommorrow.

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