Could low octane plug help in cold starts?

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by gefr, Jan 8, 2013.

  1. gefr

    gefr Life is a trip

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    I am having cold morning start problems draining the weak battery. At the moment I am grounded.
    Would I help the engine to start unplugging the low octane plug?
    I would think that lowers advance ignition. Isn't that what we want to help the motor ignite?
    What do you think?
    #1
  2. Stumpalump

    Stumpalump Been here awhile

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    Sounds logical but it sound like you just need a battery. Thump the old one on the concrete to knock the sulfate loose if you need to stretch its life.
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  3. gefr

    gefr Life is a trip

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    I have a 990 carbed and am messing around with its jetting, so the battery is new but cheap. I got it to die twice in a week so I don't think it has sulfate. Or is it getting sulfate everytime it dies?
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  4. Sumi

    Sumi Long timer

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    Doesn't the low octane map only differ from the standard map at higher RPM's ?
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  5. Stumpalump

    Stumpalump Been here awhile

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    Ever time it dies you are hurting it and leaving it sit while discharged is really hard on a battery.
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  6. charlie264

    charlie264 Long timer

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    I made a jump pack out of two 12v 7ah yuasa jelly cells I got from work....they are about a £10er each. If my bike battery is lazy I just connect for five minutes and she whizzes into life. The low octane advance timing increases with revs, so not sure how advanced it will be at tick over speeds.
    #6