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  1. R

    1996 Polaris SLT780 compression issues

    Hole in a piston is a possibility.----If it is a 4 stroke it could be a valve stuck open.
  2. R

    Engine fogging

    With engine running the fogging oil does NOT enter the carburetor bowl.----There should be no concern about gumming up the metering circuits.
  3. R

    1973 Evinrude 25 sneezing

    See post #3
  4. R

    Outboard life expectancy

    Picking up a 4 stroke 2004 model 150 HP Yamaha.----Water getting into engine oil.----Owner opted for a new motor.----Getting a 100 HP Yamaha for next to nothing.----Severe corrosion in head gasket area.----Big shops simple do not want to rebuild these exotic ( many , many parts ) motors.
  5. R

    New to us Boat!

    Check the integrity of transom and stringers.---No point putting a new floor over rotten stringers.-----Find a owners manual for this motor.----Read it 2 times before your first launch of the boat.
  6. R

    1973 Evinrude 25 sneezing

    Does spark jump a gap of at least 1/4" ( 6 mm ) or more , yes or no?-----Sounds like throttle plate is opening too early.-----Thermostat installed and working properly ?-----J4C is the correct plug.
  7. R

    1976 Evinrude - Metal vs. plastic water pump housing?

    I think I have one in a box somewhere.-----The heavy duty chromed version V-4 model 75 HP
  8. R

    Outboard life expectancy

    People know very little about fine machinery.----Most outboards do not have a chance to wear out.----They are destroyed by owners everyday.
  9. R

    91 Johnson 175 gt

    ?---#6 is the lowest cylinder on your motor.
  10. R

    91 Johnson 175 gt

    Remove bypass cover for #6 and post pictures of piston and rings.
  11. R

    91 Johnson 175 gt

    I would say 90 PSI compression is too low.----Needs to be rebuilt I think.
  12. R

    91 Johnson 175 gt

    Do you push the key in and hold it in while cranking it over?
  13. R

    91 Johnson 175 gt

    What is your starting procedure ?
  14. R

    91 Johnson 175 gt

    Needs a rebuild ?
  15. R

    Burnt piston and burnt cylinder wall, How should I repair?

    I think you need a replacement block for that " big bore " model 235 / GT 175.----Your location ?
  16. R

    . . . and I Thought Hi-tech Boat Engines Were Bad . . .

    A lot of this electronic stuff is to make the car simpler / cheaper / quicker to assemble in a factory.----The stuff is made / tested / shipped to the factory.----Assembled by " workers " with no testing / adjusting required.----Electronic bits are cheap to manufacture.----Just not cheap to...
  17. R

    2000 Johnson 40 hp Won’t start

    Yes indeed , if motor cranks slow there will be no spark!!
  18. R

    On-water toolkit for 50hp Yamaha?

    A 9.9 kicker motor !
  19. R

    1977 Evinrude 55 hp 55773d

    Any control with the big red plug will work.
  20. R

    1999 Johnson 2 stroke primer issues

    It is a 12 volt primer valve.----Key is to be pushed in while cranking it over.
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