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Thread: Glowplugs snapping

  1. #1
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    Default Glowplugs snapping

    Is this a common thing on the dti?

    Anyway I can stop it from happening?

    What's the solution if it does happen?

    Just had a garage effectively turn down the job as they've had it happen in the past, which doesn't fill me with confidence in doing it myself.

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    Did mine myself on all my old dti's... pre soak whith plenty of wd40 overnight, warm the engine slightly prior & just take it slowly... the 1st sign of a thread stripping remove instantly

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    hi just done mine in my 2.2 DTI and i was sh**in them when i done them but got them all out with out them snapping got very good advice of this site. i used lots of wd 40 and a 1/4" socket set with 10mm long socket. i didn't want to use a 1/2" drive ratchet with the 1/2 drive i think you would get to much pressure on them and i would be so easy to snap them just take your time make sure the engine is warm to

  4. #4
    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

    Trim : Elegance/Elite

    Engine : 2.0DTi

    Year : 2003

    Mileage : 73350

    Default

    As above
    just did mine this week drove car around the block to warm it up , remove turbo heat shield , then remove glow plug caps .
    Spray each glow plug with wd40 before using a long reach 10mm socket on an extension bar that way you can let the bar find its own allignment.
    this works on three of them , the fourth one you best remove turbo hose from camshaft cover first then by just using socket and rachet only slowly apply torque until glow plug gives .
    Last edited by bobssignum; 22nd October 2010 at 15:02.
    Driving vauxhall,s for 30 + years
    and still loving it

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    Vehicle : CDTI 150

    Trim : Design

    Engine : Z19DTH

    Year : 2005

    Default

    Best to use a penertrating oil e.g. Plusgas (WD 40 is a water dispersent, hence WD) on a cold engine, leave preferably overnight.
    Next day get the engine warm and using sockets as directed above.
    Agree with a 1/4 drive. Ensure you keep everything 'square' so that you are only applying a turning force not one pushing sideways.
    Good luck

  6. #6
    Regular Member signumturbo04's Avatar
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    even more effective than wd40 is to soak them in coca-cola over night. and it has to be the real stuff lol doesnt work with cheap cola. after soaking overnight they come out a dodel

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    Vehicle : vectra c

    Trim : sri

    Engine : 1800 vvt

    Year : 2007

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    last ones i did i sprayed them with neat cilit bang let it soak in over night then slightly warmed up engine... good quality snap on 1/4 drive socket (deep) and out they came

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    Vehicle : CDTI 150

    Trim : Design

    Engine : Z19DTH

    Year : 2005

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    BANG and the plugs came out............

  9. #9
    Regular Member DaveW555's Avatar
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    when you put the new plugs in copper slip the threads, should stop any ceasing for next time as copper slip can withstand temps of up to 1000 degrees c.

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    when i done mine got them out but the thread's were damaged so had to re tap the head with with a m10- 1 the one is the pitch of the tap so you have m10 taps that are fine and coarse m10-1 m10-1.25 m10-1.5

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