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  1. #1
    Cadet
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    Default 1965 9.5 johnson water pump issues!! pls help

    This engine has not ran in about 2 years. I Changed the water pump with Kit , thermostat, and blew out all lines with 80lbs air. She started right up. I have it in a barrel plus muffs for pressured water but its seems that all that comes out of the exhaust is mist, steam, and smoke. I dont remember if this was normal . Should it be a stream ?? The mist is very hot and in about 1 min idle the block (where plugs screwed in) is to hot to touch. It doesent seem like the pump is working well.
    Thanks so much
    erik

  2. #2
    Seaman
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    I have the same engine and while running it spits a spray of water out not a steady stream. It also runs very hot to the touch and I believe it's normal for this engine.

  3. #3
    Cadet
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    Hmm

  4. #4
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    One thing that bothered me is the kit i got had two bearing looking things oil seals. One fit in the bottom housing . The second one seems to fit on the top housing on the outside of it over the shaft. But there was something different in there perivously . It was brass like almost a button snap looking thing and then a rubber bushing. they dont fit with the new kit oil seal . Theres not a good diagram of the pump assembly is there ?
    thanks again

  5. #5
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    bump

  6. #6
    Petty Officer 1st Class baconbiscut's Avatar
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    Quote Originally Posted by drpuff View Post
    This engine has not ran in about 2 years. I Changed the water pump with Kit , thermostat, and blew out all lines with 80lbs air. She started right up. I have it in a barrel plus muffs for pressured water but its seems that all that comes out of the exhaust is mist, steam, and smoke. I dont remember if this was normal . Should it be a stream ?? The mist is very hot and in about 1 min idle the block (where plugs screwed in) is to hot to touch. It doesent seem like the pump is working well.
    Thanks so much
    erik
    Take the muffs off. Your engine won't ware muffs properly. By putting the muffs on it while it was in the water you were probably doing more harm than good. That water pump shouldn't have any trouble pumping on it's own in a bucket. And yes your 9.5 will sputter out water. But if steam is coming out you may have an overheating motor. Try it in the bucket without muffs and see what happens.

    Dan

  7. #7
    Supreme Mariner
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    It is not normal for the head on any 9.5 to be too hot to touch; so fix the thrermostat. When the 9.5 is working properly, you get a steady spitting of water out the exhaust relief and varying temperature as the thermostat opens and closes. If you have steam, you may have blown a head gasket.

    Be sure that the water in your bucket is as high as the water pump, which means you will be almost to the midsection.

    The primary entry for your cooling water is the small screen above the propeller, so when the propeller is turning, it pushes water into the pump. You do not have that advantage with a bucket, so you need to keep the pump itself under water.

  8. #8
    Cadet
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    I did replace the thermostat , andthe water lvl in the bucket is not above the pump ill go get a deeper bucket and try that

  9. #9
    Petty Officer 2nd Class
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    I have the same engine and my experience with them is that they run hotter then my other OMC motors, they need a new impeller to pump well. My motors have never put out a solid stream of water, more like a wet exhaust - hot air and lots of water. The cooling probs that I have had with my motors have been slit/crud in the water passages, the thermo's needed replacing, when bucket running, my motors like to have about 3 inches of water above the anti vent plate, but when running on my boat, it didn't seem as critical. Good luck.

  10. #10
    Cadet
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    Thanks so much guys!!!!
    Sure enough it was the bucket . I got a deep one and covered the pump no problem and and sprayed alot better and not so hot . Not a stream but wet splatter . Now it doesent seem to shift in two foward lol
    thanks a ton

  11. #11
    Supreme Mariner
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    Check the connector on the shift rod. You have to have the screw all the way out when you reconnect it to grab the rod correctly. Click the thumbnail.
    Attached Images Attached Images

  12. #12
    Cadet
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    hmm after taking that lower unit apart so many times in the last few days im sure that might be it . i always thought it looked kinda like i might go farther in. Ill try in the morning. I think it looks kinda like this.
    Attached Images Attached Images

  13. #13
    Petty Officer 2nd Class
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    Yes, that appears to be the problem. The indent at the top of the shift rod should be moved up where you can see through the clamp where the bolt goes through and not any of the shift rod.

  14. #14
    Cadet
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    Default Re: 1965 9.5 johnson water pump issues!! pls help

    that was it had to take screw all the way out . The engine is running great and been fishing a few times already

    thank you all so much for all your help

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