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Thread: Stuck spark plug.

  1. 9th October 2009, 03:14 PM #1
    subasurf
    subasurf is offline Master
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    Stuck spark plug.

    Hey guys, have 3 spark plugs stuck in my Holden 202 motor. They were out last week while I did a comp test and where put back in and were not over tightened. They wont come out now (new plugs to put in). I've sprayed WD-40 and waiting for that to do it's thing, but these plugs are REALLY stuck.
    Do I need to do it on a cold engine? Or should the engine be hot? What could I be missing here?
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  2. 9th October 2009, 05:32 PM #2
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    87County
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    current wisdom around here suggests that alloy heads should be cold for spark plug removal
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  3. 9th October 2009, 06:07 PM #3
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    djam1
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    Holden 202 alloy head I suspect not
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  4. 9th October 2009, 06:13 PM #4
    Bigbjorn
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    Quote Originally Posted by subasurf View Post
    Hey guys, have 3 spark plugs stuck in my Holden 202 motor. They were out last week while I did a comp test and where put back in and were not over tightened. They wont come out now (new plugs to put in). I've sprayed WD-40 and waiting for that to do it's thing, but these plugs are REALLY stuck.
    Do I need to do it on a cold engine? Or should the engine be hot? What could I be missing here?
    Is this one of the later engines with the taper seat plugs? if so, you may have over-tightened. These are tightened to 1/16 of a turn after the tapers seat together. Fair bugger to get out if you have.
    URSUSMAJOR
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  5. 9th October 2009, 07:41 PM #5
    subasurf
    subasurf is offline Master
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    I ended up getting it out. God it was a battle. Took about 4 hours to change 6 spark plugs. Pretty rediculous.
    All done now. She seams to idle better now and the throttle response feels improved. I hope it's not a palcebo effect The old plugs and leads where pretty shagged.
    Last edited by abaddonxi; 17th October 2009 at 09:03 AM.
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  6. 16th October 2009, 11:53 PM #6
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    LOVEMYRANGIE
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    Get a bottle of powdered graphite and puff a little bit onto the threads and the conical seat then just rub it in with your fingers. Always works for me.

    Cheers


    Andrew.
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