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  1. #1

    Default Mercury 90hp 2 stroke 2001 elpto Compression test HELP!

    Alright so im gonna do a Compression test on my mercury elpto 90hp 2 stroke 2001 model i just emptied the tank on boat to replace fule that has been standing for 1 year just wanna make sure its clean, so my question is can i do a compression test without fule in boat engine? i dont know if this will damage the cylinders with no fule or if dont matter please help

  2. #2
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    16,836

    Default Re: Mercury 90hp 2 stroke 2001 elpto Compression test HELP!

    Sure. If you're worried, shoot a little oil into the carbs before you begin.

    Jeff

  3. #3

    Default Re: Mercury 90hp 2 stroke 2001 elpto Compression test HELP!

    Should i shoot the oil that the engine is running on which is Quicksilver 2 stroke oil TC-W3 also where in the carbs should i do it in the buttlefly opening?
    would it not work thru spark plug holes? or thats bad idea
    Last edited by fivestarHERMES; 07-16-2020 at 07:41 AM.

  4. #4
    Join Date
    Sep 2010
    Posts
    19,802

    Default Re: Mercury 90hp 2 stroke 2001 elpto Compression test HELP!

    There is enough oil on the parts still from a year ago for doing a compression test !

  5. #5

    Default Re: Mercury 90hp 2 stroke 2001 elpto Compression test HELP!

    Putin oil in the cylinders will give you a higher compression reading.

    Milton

  6. #6

    Default Re: Mercury 90hp 2 stroke 2001 elpto Compression test HELP!

    Makes sense then ill skip putting oil thanks for info

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