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  1. #1
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    1985 50hp Yamaha problems HELP!!

    This motor is use on a weekly basis and as of last week it ran great. However this week the motor does not want to turn up enough rpm's. It starts and idles fine but when the boat is put in gear it acts like it is bogging down and it will only turn 3200rpm's at wide open throttle. Any suggestions would help. Thanks. JOEY P.

  2. Moderator 21XDC's Avatar
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    #2

    Re: 1985 50hp Yamaha problems HELP!! (Joey's Bullet)

    Sounds like a fould plug. Or fuel restriction.

    Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html

  3. Member
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    #3

    Re: 1985 50hp Yamaha problems HELP!! (Joey's Bullet)

    Hey Mike when i put the motor on the ears and hook it the hose it turns the rpm's great it only seems to want to bog when the whole boat is in the water. I did the dumy test to make sure it's gettin spark, it definatly is!!

  4. Moderator 21XDC's Avatar
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    #4

    Re: 1985 50hp Yamaha problems HELP!! (Joey's Bullet)

    You cant tell it's hitting on all cyl when on the hose. Needs a load on it.

    Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html

  5. Member
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    #5

    Re: 1985 50hp Yamaha problems HELP!! (Joey's Bullet)

    ok then i will load it up tommorrow and do the dummy test again. hopfully that will tell me something. If not, here goes another freaking $200 repair bill on a freakin boat that is not even mine........ ..................screw using a friends boat ever again!!!!!!!!!!!!!!

  6. Moderator 21XDC's Avatar
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    #6

    Re: 1985 50hp Yamaha problems HELP!! (Joey's Bullet)

    Plugs are cheap and probably needed replacing anyway. Thats the least you could do for barrowing his boat.

    Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html

  7. Member
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    #7

    Re: 1985 50hp Yamaha problems HELP!! (21XDC)

    Check your fuel filters and line. could have a clog or a leak.
    Mike

    In Memory of Michael
    Fantastic Father and Loving Son
    A true man at 23 years old

    "What was once a great country has been mortgaged and bankrupted by the egos and ethics of career politicians."

  8. Member
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    #8

    Re: 1985 50hp Yamaha problems HELP!! (Sigma)

    dont forget to check your primer bulb, make sure its staying pumped up, first time you prime it , it should stay hard if not that could be problem also, you gonna have to elimate one thing @ a time

  9. Member
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    #9

    Re: 1985 50hp Yamaha problems HELP!! (SKEETERBUG1)

    After i pump the bulb and start the motor the bulb does not stay fully pumped. I have a new bulb i will try that today. Thanks skeeterbug1, all tips help.

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