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08-26-10 | 05:24 PM
#1
Thread Starter
Newbie
Joined: Aug 2010
Posts: 1
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Flat tire that won't pump
Hi, I just bought a bike (used) and the front tire is totally flat. But when I try to pump it up, it feels like it has a lot of pressure and won't pump at all. Any thoughts? Thanks!
Last edited by ariella; 08-26-10 at 05:25 PM. Reason: Bad Title
08-26-10 | 05:30 PM
#2
Galveston County Texas
Joined: Nov 2007
Posts: 33,335
Likes: 1,286
From: In The Wind
Bikes: 02 GTO, 2011 Magnum
If it is this presta valve unscrew the end of the valve then place the pump head on it.
https://www.ehow.com/how_6327333_fill-presta-valve.html
https://www.google.com/#hl=en&source=...34ba8a6e506c20
https://www.ehow.com/how_6327333_fill-presta-valve.html
https://www.google.com/#hl=en&source=...34ba8a6e506c20
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Fred "The Real Fred"
Fred "The Real Fred"
08-26-10 | 05:33 PM
#3
Galveston County Texas
Joined: Nov 2007
Posts: 33,335
Likes: 1,286
From: In The Wind
Bikes: 02 GTO, 2011 Magnum
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Fred "The Real Fred"
Fred "The Real Fred"
08-26-10 | 05:38 PM
#4
Senior Member
Joined: Aug 2010
Posts: 175
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First determine what kind of valve you have.
https://www.pricepoint.com/images/newvalvef.jpg
If its PRESTA. Unscrew the golden part on the valve until its near the top. (yours might be a different color but should look the same)
https://www.pricepoint.com/images/newvalvef.jpg
If its PRESTA. Unscrew the golden part on the valve until its near the top. (yours might be a different color but should look the same)
08-26-10 | 05:46 PM
#5
Senior Member
Joined: Apr 2009
Posts: 39,897
Likes: 3,865
From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
You may also need to break the seal with Presta valves. After backing off the nut press the stem in for a moment and let a bit of air out. This isn't always necessary, but many valves get stuck because of the high back pressure and won't immediately open on their own otherwise.
If you have Schrader valves you have to make sure the pump head is on far enough to depress the pin when you engage the thumb-lock.
If you have Schrader valves you have to make sure the pump head is on far enough to depress the pin when you engage the thumb-lock.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
08-26-10 | 05:57 PM
#6
Senior Member
Joined: Sep 2008
Posts: 266
Likes: 0
From: Sesame Street
Bikes: Swobo Folsom, Diamond Back Master TG, Mongoose Alta, Huffy Daisy Tandem
Also, check for dirt in the top of the stem if it is a schraeder valve, usually the caps are left on with schraeder valves for this very purpose.
Cheers
Cheers
08-26-10 | 09:14 PM
#7
Thrifty Bill
Joined: Jan 2008
Posts: 23,645
Likes: 1,109
From: Mans of NC & SW UT Desert
Bikes: 86 Katakura Silk, 87 Prologue X2, 88 Cimarron LE, 1975 Sekai 4000 Professional, 73 Paramount, plus more
+1 On presta valves, you often have to burp them first. But until we know more about your bike, no idea.
