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89 gt150 pro series wont stay running when warmed up!

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  • 89 gt150 pro series wont stay running when warmed up!

    hello everyone, im new to this forum so I hope im posting in the correct place. So I have a 1989 bass tracker with a Johnson gt150 pro series motor. I had just bought the boat and im new to boats. I can get my boat started when cold no problems.it will run and when I get it warmed up it starts to bogg and then eventually it dies. then when you try to start it again you have to have the throttle open all the way and it will start and die right away. if I let it sit for a hour or so it will start up again and run good until it warms up. this is what I have replaced so far. carbs rebuilt, spark plugs, fuel filter, oil filter, bulb primer. now I do notice that it does smoke quite a bit maybe a little to much. I have done a compression test and they read from 78-85 between all 6 and I also did a fuel pressure check and it was at 3 psi or so. if anyone has any ideas I would really appricate it. thank you tyler
    Last edited by 89Proseries; 03-27-2014, 02:23 PM.

  • #2
    That compression is low, normally see more than 90psi. Recheck compression.
    Regards
    Boats.net
    Johnson Outboard Parts

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