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  1. #1

    Default 2001 Yamaha 50hp 4 stroke compression???

    Guys,

    Can any body tell me what the compression should be on a 2001 50hp 4 stroke yamaha outboard? Just wondering before we do our compression check? Thanks

  2. #2
    Captain JUSTINTIME's Avatar
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    Default Re: 2001 Yamaha 50hp 4 stroke compression???

    10% of each other

    around 90psi
    HUMAN BUILT = HUMAN FIXED
    CERTIFIED MARINE TECH

  3. #3

    Default Re: 2001 Yamaha 50hp 4 stroke compression???

    can some one help i need to purchase a 150 4 stroke engine to go on a trophy bayliner yamaha or suzuki

  4. #4

    Default Re: 2001 Yamaha 50hp 4 stroke compression???

    Hi Its me again can someone help me out regarding performance of a yamaha150 4 stroke and a suzuki 150or 175 hp 4 stroke ,one of these has to go on a trophy bayliner for fishing appreciate some help

  5. #5

    Default Re: 2001 Yamaha 50hp 4 stroke compression???

    Quote Originally Posted by JUSTINTIME View Post
    10% of each other

    around 90psi

    i have one that has 120, 90, 90.

    runs very rough, any suggestions???

  6. #6
    Captain JUSTINTIME's Avatar
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    Default Re: 2001 Yamaha 50hp 4 stroke compression???

    de carb the motor first
    HUMAN BUILT = HUMAN FIXED
    CERTIFIED MARINE TECH

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