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maxim x low compression after hard crash

Discussion in 'XJ Technical Chat' started by joshs700n, Oct 2, 2013.

  1. joshs700n

    joshs700n Member

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    hi everyone heres the story last year i crashed the x on a four way intersection hit the front car tire at 15-20 mph and the impact completely stopped me making the bike slam down on the left side when sitting on the bike the engine still ran ok but we noticed it was louder and slower like an exhaust leak but i couldnt find any leaks so we did a compression test and all cylinders came up 10-15 compression cracked headgasket ?
     
  2. xHondaHack

    xHondaHack Active Member Premium Member

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    Is there any damage to the left side of the engine?

    Do another compression test with a different gauge that is known to be good.
    Make sure the adapter that fits in the spark plug hole has a undamaged o-ring and is sealing well when testing.
     
  3. MiCarl

    MiCarl Active Member

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    10-15 PSI compression won't run at all.

    You've got a problem with your measurement.
     
  4. joshs700n

    joshs700n Member

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    haha but it did run. i just noticed it felt doggy slowish and less smooth. my dad had his thumb in the plug holes and he could easily hold em in without effort while cranking the engine. i was surpised about the readings i tried manytimes but got same readings and i know the gage was good because i get good numbers on my other bikes and when you hold your thumb in a good compession engine it should blow your thumb out.
     
  5. joshs700n

    joshs700n Member

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    i thought so too and was surprised it still ran
     
  6. KA1J

    KA1J Member

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    I agree with Hondahack, use a different gauge to test your compression. There's as issue to your problems but at those compression numbers, it won't run.

    It will run at those numbers if your gauge is reading low...
     
  7. Polock

    Polock Well-Known Member

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    +1 for the thumb test. if you can adapt a old sparkplug to a hose fitting and get 80 or 90 psi in there you'll find the cause
     

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