My mechanic gave up....help please

Discussion in 'Softail Models' started by redrockfatboy, Apr 12, 2010.

  1. redrockfatboy

    redrockfatboy Member

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    I have a 2005 Fatboy which used to run pretty good. Now the bike starts & runs up to 50 mph or so and then seems to bog down and not pull anymore....as if it goes down to one cylinder. No throttle response at that speed and impossible to pass anybody. We changed out the gas and all fuel line filters and still persists. Next changed out plugs, plug wires, coil, power commander, battery & cables and still no better. Dosen't seem to be mechanical or fuel related, but we have not been able to fix the problem. The computer says it's misfiring, but that leaves lots of doors open. Any suggestions/help would be most appreciated.
     
  2. Bud White

    Bud White Well-Known Member Retired Moderators

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    check the fuel injector wire for breaks feel the wire not just look .. the speed and vibration might be enough to cause it to split at speed..
     
  3. redrockfatboy

    redrockfatboy Member

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    We have not tried that yet. I'll let you know if it helps....thanks!
     
  4. hogrotten

    hogrotten Junior Member

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    Maybe crank sensor,camshaft sensor?
     
  5. prodrag1320

    prodrag1320 Account Removed

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    check platic line inside your tank,seen them crack,will let all fuel pressure bleed off,a very common prob
     
  6. GARVIN

    GARVIN Active Member

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    I don`t know if your bike has cats in the exhaust pipes but it could be they or one is melting down or a baffle is turning under load . your discription sounds like its constapated. if you have 02 sensors remove them & then test drive with holes open.it will be noisy but you will know if the power is back.
     
  7. NEWHD74FAN

    NEWHD74FAN Experienced Member Retired Moderators

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    You also may want to inspect the inside of the tank, you replaced the filter, but did not elude to what you found, could still have debris in the tank that could reclog the new filter. And those flexible hoses Prodrag1320 related to inside the tank are rather "notorious." As it is only during higher speeds, fuel starvation, and stresses may show intermittants as Bid stated. And Smitty did bring up the point that sometimes it helps to simplify and remove all the add-ons, making your troubleshooting easier.
     
  8. Bud White

    Bud White Well-Known Member Retired Moderators

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    higher speed and below half a tank is where the hose really acts up
     
  9. Jack Klarich

    Jack Klarich Expert Member

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    That sure sounds like a fuel problem, when the demand for fuel is needed and it aint there, thats where I would be looking , in the tank
     
  10. Bud White

    Bud White Well-Known Member Retired Moderators

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    Thats for sure