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  1. R

    1988 evinrude 20hp excessive moisture coming from exhaust

    Update: Not the impeller, still like new
  2. R

    1988 evinrude 20hp excessive moisture coming from exhaust

    Thank you This is my next step
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    1988 evinrude 20hp excessive moisture coming from exhaust

    Update: Pulled the lower gearbox and inspected Impeller was in great shape not brittle at all Pulled the exhaust housing apart, no debris Blew air where the water would go, all clear The only problem I found was the t stat was not working after putting it in a pot of of hot water
  4. R

    1988 evinrude 20hp excessive moisture coming from exhaust

    Thank you all for your input Will be replacing the t stat and the impeller and see where that lands me Again Thank you
  5. R

    1988 evinrude 20hp excessive moisture coming from exhaust

    I deserve that 😝
  6. R

    1988 evinrude 20hp excessive moisture coming from exhaust

    T stat is stuck open Going to run water through it
  7. R

    1988 evinrude 20hp excessive moisture coming from exhaust

    Well I guess I have some troubleshooting to do Thank you for your help
  8. R

    1988 evinrude 20hp excessive moisture coming from exhaust

    Never ran it full throttle started trolling from the dock When the alarm sounds I turn the boat off for a few mins then turn ignition on, when no alarm start it and made my way back to dock Pulled the t stat and it’s stuck open Could that be the problem?
  9. R

    1988 evinrude 20hp excessive moisture coming from exhaust

    It’s been running great for the past year, month. As soon as it started overheating we beelined straight back to the dock We take it out regularly from crabbing to fishing and yes I run fresh water through it every time within 2 hrs I haven’t had to do any work to this motor since I got it 2...
  10. R

    1988 evinrude 20hp excessive moisture coming from exhaust

    Excessive steam
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    1988 evinrude 20hp excessive moisture coming from exhaust

    I was on the lake and And was starting to get excessive steam coming off the motor and then the alarm went off turned off the motor let it sit for a while started back up no alarm few minutes later the steam and then the alarm again and repeat till I got back to dock
  12. R

    1988 evinrude 20hp excessive moisture coming from exhaust

    Did the compression check Came out at 120 psi each
  13. R

    1988 evinrude 20hp excessive moisture coming from exhaust

    I have excessive moisture (more so than usual coming out the exhaust and the alarm sounds after a few minutes The impeller is working fine( as in there is a stream of water come out like it is supposed to. The only thing I could think is that my exhaust gasket is fried???
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    Prop shaft gear oil

    How much gear oil is to going into the prop shaft ? I understand filling from the bottom till it comes out the vent hole but in the case what would prevent it from coming out the top. I squeezed the tube hard and it’s like there is blockage. What would or could block the gel/fluid this is a 84...
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    No throttle, idol only

    I just bought a 1984 mercury 7.5 it runs but it will not throttle it will idol and I can move it back to shift which pretty much kills it but I can’t give any throttle for acceleration Throttle cables are fine any ideas
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