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2004 f90 tlrc carb problem

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  • 2004 f90 tlrc carb problem

    I have a 2004 f90 tlrc. The carbs were removed, cleaned,by a yamaha dealer about a year ago, compression was checked, had stabil in fuel etc. I did not run the boat except right after the work was done, it ran fine. the boat sat and what i expected happened, ran rough, carbs needed cleaned. i removed and cleaned thoroughly, had to replace the pilot jet in the 1 carb(the top broke when removed) i counted turns for the needle valves and set them the same.
    so i put it all back together and started, it started right up but i noticed smoke. i shut it down to hook up sync guage. started back up and still had smoke and rich smell shut down after a few minutes ,checked plugs and 2,3,4 were wet. checked oil and seems overfull so may be getting gas in it. looking for some guidance, any help is appreciated

  • #2
    Fuel pump leaking maybe

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    • #3
      did you use the vacum gauge(manometer) to properly sync the throttles?

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      • #4
        I did not get to the point of syncing it., I stopped because of the strong gas smell and smoke. I have a motionpro sync, i hooked it up and calibrated it, hooked it up to all four carbs and started it again. I didn't want to do any damage so I shut it down.
        I did find a split in the fuel line between the fuel pump and the sediment bulb. I don't think that could cause the rich condition though?
        I unhooked the fuel line at the water seperator and put it in a clear glass container of gasoline because I didn't have a new filter and didn't want to chance sucking up trash, I don't know if thats relevant.

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