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Thread: Need help quick

  1. #1
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    Default Need help quick


    I'm in Minnesota fishing. Motor is not running full power. We took out the brass screw on the bowl and drained fuel. Didn't work. Went back out and spray carb cleaner in it and it started running good. Parked it and went out later to fish and it was back to the same old way. It's a Johnson 9.9 2 stroke. Any ideas?

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  2. #2
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    Title should say need help quick

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  3. #3
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    Where did you spray carb cleaner into? It could be water in the fuel. A clogged jet in the carburetor. Is the gas tank vented? Does the primer bulb pump up and stay firm?

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    Quote Originally Posted by cattoon View Post
    Where did you spray carb cleaner into? It could be water in the fuel. A clogged jet in the carburetor. Is the gas tank vented? Does the primer bulb pump up and stay firm?
    I sprayed it in the air intake I think my my friend said it's called. Gas tank is vented and the primer bulb stays firm. It ran good on the way out this morning and after that it did not.

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  5. #5
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    You can try pulling the bowl screw and draining the fuel and then spray carburetor cleaner into the bowl of the carb to flush any debris in the bowl out. If it has a manual choke try while it is running and pull the choke off and on, I have occasionally done that and if it’s a small piece of trash in a jet sometimes that will pull it through and clear the jet. Check spark plug for fouling also.
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  6. #6
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    Trash in the high speed jet is my guess. Pull it, drain it and blow compressed air. If you can't pull it squirt some sea foam through it and let it sit to sort of break down in there. Will smoke pretty heavy when you fire it back up but that is crud that got loosened passing though and burning up.

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    change gas, water in fuel. gary

  8. #8
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    Quote Originally Posted by smashdn View Post
    Trash in the high speed jet is my guess. Pull it, drain it and blow compressed air. If you can't pull it squirt some sea foam through it and let it sit to sort of break down in there. Will smoke pretty heavy when you fire it back up but that is crud that got loosened passing though and burning up.
    How do i find high speed jet? I don't know much about this stuff maybe I need to take it some where. I use an ounce of seafoam for every gallon of gas.

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    Quote Originally Posted by 10point View Post
    How do i find high speed jet? I don't know much about this stuff maybe I need to take it some where. I use an ounce of seafoam for every gallon of gas.
    On some of them the high speed jet is accessible through the bottom of the bowl, but not many, on most you have to remove and disassemble the carbs.

    I'd throw some new plugs in it real quick and see if that makes a difference.

  10. #10
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    Have you checked the fuel line? I had one do about the same way and found a collapsed line. Worth a quick check of you run ethanol fuel. Good luck hope you find the problem.

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