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  1. #1
    settdimi's Avatar
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    260x - 2 stuck spark plugs. lessons learned

    Always always check the spark plugs before you buy a used jet ski. make sure they can be removed and are not stuck.

    My 2009 ultra 260x had 13 hours and 2 of them were stuck because of bad maintenance. The head was removed and sent to a machine shop to remove the plugs which were the stock PMR9B plugs. Many thanks to godosidis for repairing my jet ski.


  2. #2
    GODOSIDIS's Avatar
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    U r very well come.
    Lessons learned i guess

  3. #3

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    yeah i just replaced mine in my 260x. i put 55 hours on it last year so the stock plugs had to go. 3 came out easy the 4th was stuck. i had to run the ski a while on the hose to heat up the head and then it came right out, looked like one of the threads on the plug was buggered up. the aluminum head really needs to be hot so it releases its grip on the plugs

  4. #4

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    hot aluminum is VERY risky....glad it worked out for you

  5. #5

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    when i say hot i mean operating temp. ever touch the head or valve cover after u are done riding, this motor gets dam hot. by runnin it for a few minutes with the hose suppling water it gets up to temp and releases grip on plugs. i use same method on all my toyota cars and trucks, they all have aluminum heads. american cars used to have cast iron heads so i dont think it will work as good.

  6. #6
    2005 RXT Red08Ultra250's Avatar
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    I thought heat expanded metal?

  7. #7

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    i dont know how it works, i assum alum head expands more and faster than the steel plug. i really have no clue but i know it works, just like heating up rusty bolts and nuts with torch to get them off

  8. #8
    My name is Sean and I am addicted to STXs smokeysevin's Avatar
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    it depends on the rate of expansion, if the plug material expands faster than the head does then the heat will make it worse, if not then its the same as heating a bolt to get it loose.

    on these skis ALWAYS ALWAYS ALWAYS use ANTI SEIZE!!!

    Sean

  9. #9

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    Jun 2009
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    A good ol' tube of anti-seize is your friend, I put it on all spark plugs regardless of what they are going in.

  10. #10

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    Quote Originally Posted by gators8 View Post
    A good ol' tube of anti-seize is your friend, I put it on all spark plugs regardless of what they are going in.

    +1

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