Author Topic: Cylinder cut power on fast acceleration  (Read 668 times)

IronHorse

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Cylinder cut power on fast acceleration
« on: Sep 02, 2021, 02:58:59 pm »
Hi all took my raider out for a ride today and decided to open it up a bit on a straight empty back road. I was going about 40 in third and twisted the throttle hard as it got around 55 it there was a exhaust pop while I lost power on what felt like the front cylinder. I eased off and felt power return what gives? My first thought is rev limiter but I have opened it up before to get to interstate speed of 70 when merging and this did not happen in 3rd before.

RoadStarRaider

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    ROADKILL

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    Re: Cylinder cut power on fast acceleration
    « Reply #1 on: Sep 02, 2021, 03:40:27 pm »
    First thought is a fuel pump issue but can't say for sure - did you try to get it to do it again?

    IronHorse

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    Re: Cylinder cut power on fast acceleration
    « Reply #2 on: Sep 02, 2021, 04:01:37 pm »
    I did, it didnít happen again the second time.

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      Fiddles

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      Re: Cylinder cut power on fast acceleration
      « Reply #3 on: Sep 02, 2021, 04:19:59 pm »
      Do you have a tuner on it? If unplug it and connect it back without the tuner
      V&H 2into1, Bullet cowl, Full Wrap front Fender, Ultimate  seat, Barons Tach, lowering bones and progressive spring, Ivan's flash, K&N filter with open air box, Avon Cobra Chrome  tires

      IronHorse

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      Re: Cylinder cut power on fast acceleration
      « Reply #4 on: Sep 02, 2021, 04:29:44 pm »
      No tuner just Ivanís latest ecu flash

      Fiddles

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      Re: Cylinder cut power on fast acceleration
      « Reply #5 on: Sep 02, 2021, 05:00:01 pm »
      No tuner just Ivanís latest ecu flash
      Ivan's isn't the issue
      V&H 2into1, Bullet cowl, Full Wrap front Fender, Ultimate  seat, Barons Tach, lowering bones and progressive spring, Ivan's flash, K&N filter with open air box, Avon Cobra Chrome  tires

      IronHorse

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      Re: Cylinder cut power on fast acceleration
      « Reply #6 on: Sep 02, 2021, 05:01:46 pm »
      I noticed the rear tire was about 4 psi low and the suspension seems to be set for 2 up. When I got the bike hitting a bump would nail my lower back pretty hard Iím now 30 pounds lighter than when I got the bike and this may be a stupid question but is it possible on rev the weight shifted and I lost traction causing me to in fact hit the rev limiter? I was thinking about pulling the ecu for 30 and seeing if it resets.

      ROADKILL

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      Re: Cylinder cut power on fast acceleration
      « Reply #7 on: Sep 02, 2021, 05:29:23 pm »
      I noticed the rear tire was about 4 psi low and the suspension seems to be set for 2 up. When I got the bike hitting a bump would nail my lower back pretty hard Iím now 30 pounds lighter than when I got the bike and this may be a stupid question but is it possible on rev the weight shifted and I lost traction causing me to in fact hit the rev limiter? I was thinking about pulling the ecu for 30 and seeing if it resets.
      If you can't get it to duplicate the incident I'd leave alone for now or try to get it to do it again - I had mine stall out in 2nd one day and never did it again - just for the heck of it how old is your battery - a week or low battery can cause some weird things to happen sometimes.

      IronHorse

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      Re: Cylinder cut power on fast acceleration
      « Reply #8 on: Sep 02, 2021, 05:37:50 pm »
      Batteries less than a year.I remember it doing something similar with the old factory battery last year before I replaced it.I plugged a volt reader in to the accessories plug and it read 12.5 but the diag function on 09 read 11.9.
      Gonna attempt to charge it soon as I find my charger.
      May be a bad batt.

      heftysmurf

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      Re: Cylinder cut power on fast acceleration
      « Reply #9 on: Sep 09, 2021, 10:35:13 am »
      Make sure the connectors are clean and have a good tight connection.
      2011 Raider S