Need help if anyone can offer...

Discussion in 'Bubba's Outboards' started by river_runner_85, Aug 31, 2008.

  1. river_runner_85

    river_runner_85 New Member

    Messages:
    256
    State:
    Kansas City, Missouri
    We were out today doing some fishing and ran into a problem. The boat was running just fine and then we went to go hammer down on it and it reved up slowed the throttle down and putted around. It seemed like if we stayed in low gear it did just fine. When we got off of the river, went back to the house and took the prop off. Thought it could be a spun prop. But it looked just fine. On something like this can looks be decieving. It felt pretty tight on the shaft. We have no idea what it could be and was just wondering if anyone had any ideas. It seems like when we hammer down on it, it wants to rev through the roof. Is something not engaging. Please help if you can. Much appreciated.
     
  2. tbull

    tbull New Member

    Messages:
    3,318
    State:
    SW Ohio
    Mine was doing that but more of a fuel problem, but it did not sound like yours was bogging down????Guess I would start with the basics and do a spark and compression test just to eleminate the basics. If it is a lower unit problem you are referring to that is definatley over my head. I am sure bubbakat will chime in and point you in the right direction.
     

  3. Catfish Fever

    Catfish Fever New Member

    Messages:
    4,548
    State:
    Wside, Mil
    Jeff, Motor model, brand, year, HP, would probably be helpful.
     
  4. dinger66

    dinger66 New Member

    Messages:
    899
    State:
    north alabama
    could be in the drive shat in the foot
     
  5. Backlashed

    Backlashed New Member

    Messages:
    3,270
    State:
    Derby, Kansas
    Jeff, it sounds like you might possibly be trimmed up to high causing it to cavitate or ventilate. The prop is sucking air into it, and not getting any bite.
    Just a guess, but something to consider.
     
  6. PHLIPS4BIGKATS

    PHLIPS4BIGKATS New Member

    Messages:
    2,679
    State:
    Alma Kansas
    Has this problem exsisted or did this just start?
     
  7. daniel-delarosa

    daniel-delarosa New Member

    Messages:
    392
    State:
    seminole, oklahoma
    I have the same problem with a boat that I just bought. Mine does sound like it boggs down a little though. How'd you fix yours?
     
  8. river_runner_85

    river_runner_85 New Member

    Messages:
    256
    State:
    Kansas City, Missouri
    No this wasn't bogging down at all. It was running like a champ. It would just rev through the roof when we went to hammer down on it. Made me think it was a spun hub. But it looked good or at least i thought.
     
  9. river_runner_85

    river_runner_85 New Member

    Messages:
    256
    State:
    Kansas City, Missouri
    Problem started today. We went to go hammer down on it to get back down the river and thats when it started. It is a Yamaha, 70hp, and I'm guessing it is a 2001 or 2002. Can't remember.
     
  10. flat fighter

    flat fighter New Member

    Messages:
    213
    State:
    kansas
    I was with him when this happened. the motor has been working perfectly till now and wish it was a simple as a trim problem. At idle speed it engages fine but as you rev up and put more torque on it it revs high but doesn't go any faster kinda like a clutch slippin in a car
     
  11. Kansas Tree Rat

    Kansas Tree Rat New Member

    Messages:
    486
    State:
    Waverly, Kansas
    When this happens to me I just paddle harder......:eek:oooh:
     
  12. vlparrish

    vlparrish New Member

    Messages:
    1,276
    State:
    Bedford, Kentucky
    River Runner, it sounds like a spun prop. There is a way you can check to see. With motor not running. While off the water, put the motor in gear, take the cowl off the engine and hold the flywheel. While holding the flywheel stand on the prop and push down hard. If the prop spins and the motor doesn't, the prop is slipping. Ninety percent of spun props have no visual signs of being spun. Vern
     
  13. river_runner_85

    river_runner_85 New Member

    Messages:
    256
    State:
    Kansas City, Missouri
    I will definetly have to try that thanks for the input.
     
  14. river_runner_85

    river_runner_85 New Member

    Messages:
    256
    State:
    Kansas City, Missouri
    yeah i wished that worked in this big boat. LOL
     
  15. Mike81

    Mike81 Well-Known Member

    Messages:
    4,186
    State:
    Alabama
    Hmm?? Almost sounds like something in the gear train is fubar??? but parrish's diagnose sounds likely too...
     
  16. tbull

    tbull New Member

    Messages:
    3,318
    State:
    SW Ohio
    May want to disconnect the battery, I know people who have done that test and almost lost some toes because the motor turned over....:eek:oooh:
     
  17. JAYNC

    JAYNC New Member

    Messages:
    1,312
    State:
    Newport N.C.
    My engine did the same thing when I spun the prop hub. Everything looked fine but when I tried to pull the hub out of the prop it took a mallet to get it out. Put a new hub in and it worked perfectly. Hubs are cheap, put in a new one and try it.
     
  18. river_runner_85

    river_runner_85 New Member

    Messages:
    256
    State:
    Kansas City, Missouri
    We plan on going Fri. and getting the hub fixed. Called the prop shop and I can sit there and wait on it while it is being worked on. Then I called a couple of other places and found out that they send the props to the first place I called. It is going to be about $45. I don't think that is too bad. I can't wait. We are planning a fishing trip Sat night.
     
  19. river_runner_85

    river_runner_85 New Member

    Messages:
    256
    State:
    Kansas City, Missouri
    Well got the new hub yesterday. We are going out tonight and doing some fishing. We will find out then if it was the problem. I'm pretty sure it was. Thanks to all for your help and opinions.
     
  20. Sunbird

    Sunbird New Member

    Messages:
    781
    State:
    Sandy Run,
    Try Iboats.com

    Seloc Marine has outstanding owner manuals that come with support from mechanics and a huge video library to help diagnose and fix anything. I love it and refer to it all the time.