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Thread: Pro 785 help!

  1. #1
    cayennet78's Avatar
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    Pro 785 help!

    Black jack carbs.
    Won't hardly run.
    Dumping fuel in center carb (8 nozzles spraying when running)
    Mag carb back firing into carb.
    Played with mix screws. Nothing helps. Where do I start?


  2. #2
    Moderator beerdart's Avatar
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    Whats your compression.

  3. #3
    cayennet78's Avatar
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    Just did top end rebuild

  4. #4
    Moderator beerdart's Avatar
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    And what is your compression?

  5. #5
    cayennet78's Avatar
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    Sorry, don't know.
    Figured would need to be broke in before that was relevant.
    did run ok.
    Put my hand over the carb (was told would test the reeds by how much spray back)
    Now, this is the problem.
    Related maybe.

  6. #6
    bowsniper's Avatar
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    Carb needle and seat not seated correctly? Or out of adjustment? That would make it spew gas all the time.

  7. #7
    cayennet78's Avatar
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    Quote Originally Posted by bowsniper View Post
    Carb needle and seat not seated correctly? Or out of adjustment? That would make it spew gas all the time.
    That's where I was going...
    What does it take to check/adjust that needle? Do the carbs all need to comeout?

  8. #8
    Polarisracer166's Avatar
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    If you want give me a call.. Did you have the fuel lines off? If its a leaky needle and seat you need to take the carbs off and use a pop off gauge to test.

    585-261-3360 / Jeff

  9. #9
    Derwood98's Avatar
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    Make sure your spark plug wires are on the correct cylinders.

  10. #10
    cayennet78's Avatar
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    After sitting over night and taping the carb with a hammer. Back to normal!
    Thanks for the help/advise guys. Be back soon.
    Mind if I save you're # Jeff?

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