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Spark Plug Removal

Discussion in 'VT - VX Holden Commodore (1997 - 2002)' started by Shounak, Aug 30, 2005.

  1. Shounak

    Shounak The Kicking Horse

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    Can anyone explain how to remove spark plugs from a VXII?

    I've got the Gregory's repair manual but it says **** all. According to me anyway.

    Can someone please give a basic, plain english explanation?

    Cheers
     
  2. Doctor Bob

    Doctor Bob Grandpa

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    Taken from the NASA manual
    get the correct size socket
    put it on a ratchet or similar
    turn the sparkplug anti-clockwise until it comes out
    reverse the direction of rotation to fit the new one
    after the plug touches the seat, JUST NIP IT UP.
    put the lead back on

    hey presto done

    Rob
     
  3. Shounak

    Shounak The Kicking Horse

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    anyone know what the correct size socket is?
     
  4. Doctor Bob

    Doctor Bob Grandpa

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    5/8"........
     
  5. Just "NIP IT UP"? I assume you mean it should be in firm, but not much past finger tight?
     
  6. slowr8

    slowr8 New Member

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    Half a turn once tight.

    Good to see you've researched though.

    Well done, more than most...
     
  7. Konker

    Konker Guest

    dear god you drive a HOLDEN??? why cant you do spark plugs? take old out. put new ones in pref in that order. spark plug size socket. there are only 3 sizes. please please dont do your own oil. the whole sump plug may end up in tears.
     
  8. Shounak

    Shounak The Kicking Horse

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    cmon not my fault.. neither of my parents can change flat tyres..any car problems, including interior light bulbs being blown were taken care of by the dealer..

    BUT i helped change a mates engine oil on his holden.. nothing to it..
     
  9. TigerVX

    TigerVX New Member

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    Give him a break. Theres a first time for everyting.
    At least he's done a bit of research rather than f*** something up.
     
  10. BlackVXGTS

    BlackVXGTS Well-Known Member

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    Torque is one of the most critical aspects of spark plug installation. Torque directly affects the spark plugs' ability to transfer heat out of the combustion chamber. A spark plug that is under-torqued will not be fully seated on the cylinder head, hence heat transfer will be slowed. This will tend to elevate combustion chamber temperatures to unsafe levels, and pre-ignition and detonation will usually follow. Serious engine damage is not far behind.

    An over-torqed spark plug can suffer from severe stress to the Metal Shell which in turn can distort the spark plug's inner gas seals or even cause a hairline fracture to the spark plug's insulator...in either case, heat transfer can again be slowed and the above mentioned conditions can occur.

    The spark plug holes must always be cleaned prior to installation, otherwise you may be torquing against dirt or debris and the spark plug may actually end up under-torqued, even though your torque wrench says otherwise. Of course, you should only install spark plugs in a cool engine, because metal expands when its hot and installation may prove difficult.

    I believe that slowr8 is incorrect in saying to tighten half a turn once finger tight. That might be OK for spark plugs with gaskets but not for plugs without gaskets. Should turn only 1/16 of a turn once finger tight, or use a torque wrench - 1.5-2.5 kg/m for cast iron cylinder heads and 1.0-2.0 for aluminium heads (14mm spark plugs). Also use nickel anti-sieze on the threads when you replace the plugs to make them easier to undo next time.
     
  11. Konker

    Konker Guest

    sorry bro. just saw an opportunity to take the piss and lept at it. being a mechanic i enjoy watching newbies. just make sure the spark plugs are done up correctly if they dont have gaskets. and best of luck in your learning journey. did you get standard plugs or heavy iridium ones?
     
  12. Shounak

    Shounak The Kicking Horse

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    Ok Baby steps.. *takes a deep breath*

    When I open the bonnet I see a thing (yes I know) with a bunch of numbers, numbered from 1 - 6, not in that order. Just above it are little rubber plugs which I can pull off. I've circled them on an image here.

    [​IMG]

    I thought that the metal thing exposed was the spark plug, and a 5/8 is heaps bigger then that.

    Where exactly do I put the 5/8?

    Thanks
     
  13. accentstencil

    accentstencil Well-Known Member

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    That is the coil pack not the sparkplugs. If you follow the the 6 leads from the coil pack they will lead to the sparkplugs.
     
  14. TigerVX

    TigerVX New Member

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    Plugs are located on the side of the engine (3 each side) at the opposite end of those leads you are talking about. Pull the leads off and there are your spark plugs.
    Tip - Remove only one lead at a time so as to avoid mixing up which lead goes to which cylinder.
     
  15. family fix it man

    family fix it man Member

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    Wow, and I thought I had problems:)
    OK I found this old thread trying to find out the thread size for a (3.8 VS) compression test kit. I'm sure it's a simple question too, for those in the know. Just want to make sure the kit has the right fittings before I buy it.
     
    Last edited: Nov 4, 2018
  16. immortality

    immortality Moderator Staff Member

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    Google is your friend...

    BPR6EFS

    Which shows 14mm x 1.25mm pitch
     
  17. gungazza

    gungazza Active Member

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    i wonder how that bloke went lol
     
  18. gungazza

    gungazza Active Member

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    might be working for holden now lol
     

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