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  1. #1
    Ryallen's Avatar
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    Compression/Spark plug issues?

    Idle RPMs on the flush kit went from 2200 to 1600 dropping and climbing. It held at 2200 for a while when first started then started fluctuating. the mechanic pulled the spark plugs to see what they looked like. He immediately thought they looked very white indicating that it got a little hot in there, this lead him to do a compression check, results were 125 on 1 and 130 on 2 and 3. That seems normal to me?

    He did ask me if I ever put fuel injector cleaner in the ski, I caught my father in law doing it once because he thought it would keep things clean. could that be the cause of the spark plug discoloration?...it was a year ago or so and I didn't notice any power problems riding this weekend. Buds might also be able to shed some light on the issue.

    any ideas?

    important info: 08 RXPX no mods
    Last edited by Ryallen; 04-15-2013 at 06:50 PM.


  2. #2
    Moderator beerdart's Avatar
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    Your compression is fine so are the plugs being white as your motor is supercharged.

  3. #3
    Ryallen's Avatar
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    beer- is it normal for the idle RPM's to fluctuate by 600 rpms on the flush?

  4. #4
    Moderator beerdart's Avatar
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    Sometimes when cold..
    Quote Originally Posted by Ryallen View Post
    beer- is it normal for the idle RPM's to fluctuate by 600 rpms on the flush?

  5. #5
    Moderator beerdart's Avatar
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    Throw some fresh spark-plugs in and see how she does on the water.

  6. #6
    Ryallen's Avatar
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    It had ran for a about 4 minutes on the flush. the white makes sense on the spark plugs, he doesn't work on a lot of 255s or SCd skis I don't think.
    Without power loss and after hearing from you I can't see that there are any issues.

    Oh yeah: the oil is most definitely overfilled from my buffoonery could cause the RPM drop?

  7. #7
    Moderator beerdart's Avatar
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    Yes

  8. #8
    wotxxxsd's Avatar
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    It's good to run some Injector cleaner in it .

    If your Injectors clog then you can burn that piston quickly.

    I run Injector cleaner in all the skis I buy..

    Over full oil will affect rpms in a big way..

  9. #9
    TheGunMan's Avatar
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    What cleaner is best to use?

    Quote Originally Posted by wotxxxsd View Post
    It's good to run some Injector cleaner in it .

    If your Injectors clog then you can burn that piston quickly.

    I run Injector cleaner in all the skis I buy..

    Over full oil will affect rpms in a big way..

  10. #10
    GasResearch-VT.SE's Avatar
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    Quote Originally Posted by TheGunMan View Post
    What cleaner is best to use?
    Injector cleaner, check locally for the most trusted brand.

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