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Thread: Pulling up glow plugs

  1. #1
    Regular Member AlexGSi2000's Avatar
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    Default Pulling up glow plugs

    Just after some advice on pulling up the glow-plugs after unscrewing them.

    The engine is a Z19DTH.

    Soaked the glow-plugs with plusgas, warmed up the engine and unscrewed them using a 9mm deep socket.

    Problem is, once they have been fully unscrewed - I cant pull them out!, I have used pliers but cant grip them properly.

    Can anyone offer any advice?

    Many thanks!

  2. #2
    Admin plasma's Avatar
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    Vehicle : Vectra

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    Default

    be careful the ends havent got mushroom shaped inside the engine block, if they have then you'll never be able to remove them without a head off job... Does sound like this tbh if you've managed to unscrew them... Be careful mate..
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    Regular Member AlexGSi2000's Avatar
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    That sounds interesting - how would that happen then?

    Its not like I can pull them up so far, as soon as they are at the end of the threads they just wont budge.

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    Regular Member jimbojetset's Avatar
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    I was worried this might happen when I did mine in the new year so I did some research before I started... apart from getting the engine very hot and using specialist tools and the obvious penetrating fluid I read that people have used such stuff as Coka Cola or vinegar (soaked overnight) then get the engine super hot to free seized plugs... I never had a problem when I did mine so I can't vouch for either method but I would certainly have tried these had my plugs seized.

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    Admin plasma's Avatar
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    just through normal useage... They form like a fishing hook and hook themselves in... One of them on my cars has done this but has managed to weld itself to the head forming a compression tight seal, soo leaving that well alone.... other 3 were fine
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    When I changed mine recently I had the same problem. They were completely undun and loose but the last bit wouldn't come out. Mine was due to a build up of burnt on carbon/soot around the tip of the glow plugs. This was on the ones that were not working properly.
    Sprayed WD40 down the glowplug and kept trying to pull up gently and eventually they came out.

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    Spraying some carb cleaner down would probably have a quicker result if you have any.

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    Regular Member AlexGSi2000's Avatar
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    Cheers for the advice guys, I will have another go at trying to tease them up - if they still refuse, they can stay there!

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