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  1. J

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

    I bought spark plugs this evening and swapped them out, still nothing. I mix my fuel at 50:1 and I know it’s good. I’ve got STRONG spark. My compression is 96/100. I don’t know how to measure crankcase compression… I’ll look that up. I’ll go ahead an order a new key. I think this one is...
  2. J

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

    Racer what troubleshooting would you do?
  3. J

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

    So you think I replace woodruff key and motor will start?
  4. J

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

    Flywheel
  5. J

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

    You guys are all great!!!
  6. J

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

    Key
  7. J

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

    I do too. It doesn’t appear to be broken to me. If it is I’ll swap it at a later time. I don’t know what to do to fix my motor from here.
  8. J

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

    What is the solution to fix this? I don’t know where to go from here?
  9. J

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

    Couple more pictures of key.
  10. J

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

    You know I’m glad I posted this. I would’ve never thought that key was sheared. My novice eyes it looks just fine
  11. J

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

    More pictures
  12. J

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

    How does this spark look to you guys?
  13. J

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

    David thanks for being so helpful!
  14. J

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

    Another angle, these are from earlier today. I guess it would be broke. Looked ok to me but the only one I had that was obviously broken fell out when I took the flywheel off.
  15. J

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

    Will do!
  16. J

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

    Fly wheel is on their good. No rocking and properly seated. Torqued with my wrench
  17. J

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

    Me too on my 6 hp
  18. J

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

    Did this picture go through?
  19. J

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

    Today.
  20. J

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

    My spark looks more white than blue but might be the lighting…I’m not sure if they means anything to you guys or not.
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