Search results

  1. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Key is snapped look at the picture i blew up
  2. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Well hopefully the new key will help you the crank looks a little bit bent does it spin ok ?
  3. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Spark is great just timing is off badly its that sheared key don't worry about anything until you have replaced that broken key
  4. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Out of time massively
  5. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    When you fit your new woodruff/flywheel key make sure you use a little bit of grease on the dome side to help with friction whist fitting the flywheel back on or its an absolute nightmare to fit
  6. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Not a problem at all
  7. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    With the flywheel in place without the locking nut you should see the woodruff/flywheel key engadged tightly into the slot on the flywheel yours looks flat at the top and broken and protruding at the bottom of the crankshaft
  8. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Are you sure this key isn't sheared it looks broken and sheared at the top
  9. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

  10. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    And maybe just check the woodruff/flywheel key just one more time before you do
  11. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Ok can you show an attempt at a start
  12. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Yes all looks ok and if the magnets were in bad condition you wouldn't get a spark to both cylinders so as the post before said are you sure you seated the flywheel correctly its sited with no movement (rocking) and tightly fitted to the correct torque i believe on your engine its 40 - 45 lbs
  13. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Haha mine was only last week 😅
  14. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    This is a good point as if the flywheel isn't seated properly after removal it can shear easily ive done it myself
  15. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Yes this means a timing issue and he has already said he has a spark this is why I said about the woodruff key, the only other think I can think of on timing is the magnets under the flywheel being worn giving an of piste spark but even then every now an then the exhaust would give out a puff
  16. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Thats why these threads are here to help everyone gain experience through success and faliure,
  17. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    It certainly is and im just trying to help maybe what I'm saying will not help but just trying to help out a guy with his issues
  18. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Let me know how it goes have a few more ideas to try and help
  19. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Ok have you turned the idle screw to full lean and primed on choke only worth a shot just to try, if it starts it will use up fuel from choke and die out after 10 to 20 seconds
  20. David wright

    1990 15 hp Johnson won’t start, sort of sounds like it’s sucking air/leaking air

    Even if you turn idle screw to full lean and prime bulb a few times to get the fuel to plugs ?
Top