Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Is it a faulty pump

  • 19-09-2013 9:46am
    #1
    billyhead
    Registered Users, Registered Users 2 Posts: 10,176 ✭✭✭✭


    Folks,

    Just have a query about my track pump. I am not sure if anyone can advise as to if its faulty or not. Basically I changed a tube on my front wheel road bike yesterday. It has a presta valve and the pump is used for these valves however when I try and get a seal on the pump with the lever down and then lift it up when attahced to the valve it only pumps 40psi pressure into the tyre and blows off the valves. The valve is unscrewed at the tip on the tube the way it should be to accept air from the pump. Its funny because when I am trying to pump air into the tube aswell air is being forced out at the end of the valve. i.e it seems coming fro mthe hole where the valves is fed through the rim. The above probaly sounds confusing but could it be a faulty track pump that needs to be replaced?


Comments

  • #2
    07Lapierre
    Registered Users, Registered Users 2 Posts: 8,310 ✭✭✭07Lapierre


    Faulty valve more like. Try pumping the other tube. if it works..pump is OK.


  • #3
    johnnybhoy78
    Closed Accounts Posts: 13 ✭johnnybhoy78


    sometimes the pumps come with a small part in the head that supports both type valves ( small plastic bit) mite need to turn it around for presta size


  • #4
    kenmc
    Registered Users, Registered Users 2 Posts: 7,278 ✭✭✭kenmc


    did you press in the valve head a touch to free it up before pumping? i.e. let the air out a bit before you put it in?


  • #5
    billyhead
    Registered Users, Registered Users 2 Posts: 10,176 ✭✭✭✭billyhead


    kenmc wrote: »
    did you press in the valve head a touch to free it up before pumping? i.e. let the air out a bit before you put it in?

    thanks folks for the advice. I am going to give it another go this eve. I am going to have to double check I didn't pierce the tube when fitting it.


  • #6
    Wishbone Ash
    Registered Users, Registered Users 2 Posts: 25,038 ✭✭✭✭Wishbone Ash


    billyhead wrote: »
    .... it only pumps 40psi pressure into the tyre and blows off the valves....
    billyhead wrote: »
    .... I am going to have to double check I didn't pierce the tube when fitting it.
    If you pierced the tube, you wouldn't be getting anywhere near 40psi.


  • Advertisement
Advertisement