Author Topic: Tank Vacuum  (Read 5470 times)

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  • Offline Maverick

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    Offline Maverick

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    Tank Vacuum
    on: Jan 15, 2017, 07.06 pm
    Jan 15, 2017, 07.06 pm
    Struggle with opeining the petrol cap with the key until I realised the key was turned and I had to pull it hard up to open to brake the vacuum seal.

    Is it just me?

    I guess I need to find the air pipe but thought the over is on the outer lip under the cap and not inside it so would not stop the vacuum if that makes sense?

    Any suggestions, I admit I have not looked yet, just relieved I got it open lol

  • Offline pistnbroke   england

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    Offline pistnbroke

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    Re: Tank Vacuum
    Reply #1 on: Jan 15, 2017, 08.32 pm
    Jan 15, 2017, 08.32 pm
     :431:, i haven't had that problem, lucky for me i just put the key in the barrel, turn it to the right and the filler cap just pops open.
    Is this the same way you open yours.
    I dont seem to get any extra pressure sucking cap down or forcing it open.
    Good luck with your problem maverick.
     :028:
    keep it shiny side up !!!

  • Offline Maverick

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    Offline Maverick

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    Re: Tank Vacuum
    Reply #2 on: Jan 15, 2017, 08.48 pm
    Jan 15, 2017, 08.48 pm
    I turned the key and nothing happened!!!!!!

    I turned and un turned, and pushed cap etc..........thought sh#tttttttttttttttttttttttttt

    Then after ashort bit had to pull quite hard with the key turn to open the cap with a nice whoosh type of sound

  • Offline pistnbroke   england

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    Offline pistnbroke

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    Re: Tank Vacuum
    Reply #3 on: Jan 15, 2017, 08.57 pm
    Jan 15, 2017, 08.57 pm
    Could it be the barrel needs a little wd40 in the key hole, or is the barrel slightly spinning in the lock.
    It seems like an odd fault, especially as you opened it with a bit of a tug.
    Sorry i aint that good mechanically, wish i could be of more help.
     :028:
    keep it shiny side up !!!

  • Offline Maverick

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    Offline Maverick

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    Re: Tank Vacuum
    Reply #4 on: Jan 15, 2017, 09.00 pm
    Jan 15, 2017, 09.00 pm
    No not barrel or key, as i always keep these well lubed as the petrol can dry out and make turn the key stiff.

    Key turns sweet, its the vacuum I have to pull against and I can hear the air rush in!!........eventually

  • Offline pistnbroke   england

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    Offline pistnbroke

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    Re: Tank Vacuum
    Reply #5 on: Jan 15, 2017, 09.02 pm
    Jan 15, 2017, 09.02 pm
    Hi Maverick, you  must have a really tightly sealed tank for that sort of effect, as i said earlier mine just pops open quite easily.
     :028:
    keep it shiny side up !!!

  • Offline Maverick

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    Offline Maverick

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    Re: Tank Vacuum
    Reply #6 on: Jan 15, 2017, 09.05 pm
    Jan 15, 2017, 09.05 pm
    It used to be ok

    A little while back I noticed bit of an air intack bit did not think too much about it.

    Today it was quite bad.

    I guess if I fill up more often lol

  • Offline Hartley   england

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    Offline Hartley

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    Re: Tank Vacuum
    Reply #7 on: Jan 15, 2017, 09.17 pm
    Jan 15, 2017, 09.17 pm
    Could it be one of the breather tubes crushed/trapped. Have you had the tank up or the bike service recently?