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VZ alloytec (how do i change spark plugs)

Discussion in 'VZ Holden Commodore (2004 - 2006)' started by swift85, Mar 22, 2009.

  1. swift85

    swift85 New Member

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    I am wanting to change plugs on my VZ alloytec,my question is how do i get to them and how do i replace them.is it a hard job?
     
  2. ashbox

    ashbox back in black

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    its a manifold off job
     
  3. PaulSV6

    PaulSV6 CHE Tuned 156.8rwkw

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    As mentioned u have to take off the Manifold,
    There are 5 bolts ontop, undo them, then disconnect all hoses it will take abit of effort to get off.
    When u take it off put a rag covering each of the 6 intake holes to stop dirt entering. All you have to do now is disconnect each of the coil packs to access the plugs.
     
  4. Benboy

    Benboy Active Member

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    Might pay to obtain (buy) a replacement gasket for the 'manifold cover' in case you damage to old one before you do the job.
     
  5. swift85

    swift85 New Member

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    Are the manifold bolts need to be done up with a tension wrench.
    And is the job able to be done by someone with a bit of mech knowledge or do you need to be a qualified mechanic.
    How do you get the plugs out (do you unclip the electrical harness and undo the one bolt to free the terminal from the plug?)
     
  6. danny1987

    danny1987 New Member

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    when do u chage them on the sv6 my book says 2 different times one page says 90 one says 120 which one is it???
     
  7. IPCOlsenVZ

    IPCOlsenVZ New Member

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    What are you referring to? tension?

    Tension: 16-20Nm for the plugs.
     
  8. swift85

    swift85 New Member

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    Tension the bolts for manifold
     
  9. IPCOlsenVZ

    IPCOlsenVZ New Member

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    Of what I can see, it should be 23Nm.
     
  10. danny1987

    danny1987 New Member

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    how many ks???
     
  11. IPCOlsenVZ

    IPCOlsenVZ New Member

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    Shit I totally miss read your post and went off at a tangent:whistling. I had a look through my owners manual (which covers the stock and the 190 model) and I could only find 120km interval. Flip a coin I guess.
     
  12. VZCalZone

    VZCalZone now choppin the VZ

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    I'm lifting the manifold but don't want to do damage. I've taken out 5 bolts and disconnected 3 hoses, one at the intake and 1 on each side halfway along. I've got the front loose but something seems to be holding it at the back. Lifting harder is probably the way to go but wanted to check. Its a 190 not that it should matter. any quick advice would be appreciated

    ps how the hell do you get the plugs out after undoing them, they're a mile deep
     
    Last edited: May 3, 2009
  13. andyman

    andyman The Only 6sp VZ Wagon

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    there is a bolt at the very end of the manifold only a short one, look over the back near the map sensor and you should see it, its next to it, have you also disconnected the lead to the variable intake actuator?
     
  14. mitch_893

    mitch_893 New Member

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    I know this post is very old, but your doing it all wrong. To save time, and the paper gasket in between the 2 halves of the manifold, you leave in the passenger side front bolt, and the drivers side rear bolt(very back of motor). These 2 bolts don't go all the way through, they are only into the bottom half of te manifold. This means u can then just chock up the front of the manifold with a block and then proceed the plug change. You should never have to replace the gaskets when doing plugs on a vz. Ve's are a different story tho, as there is less room.
     
  15. ashbox

    ashbox back in black

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    care to elaborate on this?
    if your lifting the manifold chances are the paper gaskets will break therefore, you've gotta replace them
     
  16. coasty

    coasty the voices told me to

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    sounds too much like hard work. think ill drop mine into the mechanics and go fishing.
     
  17. FstStig

    FstStig Diagnostician

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    If you wanna pay me, I'll come and do them :p Only a Stones throw away from Kanwal :)
     
  18. RiCeY

    RiCeY F O R U M W A R R I O R

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    The manifold is a 2 piece item, if you do not undo the front right and rear left bolts the manifold does not seperate therefore the paper gasket doesnt get damaged.
     
  19. ashbox

    ashbox back in black

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    the inlet manifold is a once peice....
    and if you dont undo all the bolts...how are you suppose to lift it? you'd still not get any movement
     
  20. RiCeY

    RiCeY F O R U M W A R R I O R

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    Yes youd know more than someone that works on these engines every day, idiot.
     

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