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Recent content by BetaGod

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    Mariner 90 hp 4 stroke carburetor from 2000, maximum rpm problem

    Does spark jump a gap of 3./8" ? yes! Ok i will test again with the throttle open! I need to warm the motor or not?
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    Mariner 90 hp 4 stroke carburetor from 2000, maximum rpm problem

    yes sparks are ok! throttle wasnt open in compression test.. i need to open? I did it with cold motor and closed throttle
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    Mariner 90 hp 4 stroke carburetor from 2000, maximum rpm problem

    anyone can help me?
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    Mariner 90 hp 4 stroke carburetor from 2000, maximum rpm problem

    i tested compression... 1° cylinder 112 PSI 2° cylinder 112 PSI 3° cylinder 120 PSI 4°cylinder125 PSI i think not bad for a 24yr old motor! Any suggest?
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    Mariner 90 hp 4 stroke carburetor from 2000, maximum rpm problem

    at 4000/4200 it run fine.. no fall after a while and dosent shutter.. timing seems to be ok (the mechanic says this) and mechanic says is not a fual pump related problem... no idea.. i'm thinking about a some problem in the carburator or in the CDI
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    Mariner 90 hp 4 stroke carburetor from 2000, maximum rpm problem

    sparks are a bit white too..all of them
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    Mariner 90 hp 4 stroke carburetor from 2000, maximum rpm problem

    waiting for the compression check kit... after tomorrow i will try!
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    Mariner 90 hp 4 stroke carburetor from 2000, maximum rpm problem

    jump spark gap is ok too!
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    Mariner 90 hp 4 stroke carburetor from 2000, maximum rpm problem

    all replaced, no changes
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    Mariner 90 hp 4 stroke carburetor from 2000, maximum rpm problem

    Good morning everyone, I have a Mariner 90hp outboard with carburettors from 2000 (if I'm not mistaken the same as the 100hp Yamaha), which in practice no longer takes all the revs it should take... last season with the same set up I got 35 knots ( at around 5000 rpm) with two people on board...
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