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Old 30th December 2005, 10:38   #1
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Default Could it be a valve problem?

Recently, i've noticed that the left rear tyre on the Vtec loses pressure drastically but, it doesn't deflate completely. It comes down to around 25psi and stays there.

Yesterday, i'd filled 30psi in the rear tyres and it's already come down to 25psi on the left one. The right one still shows 30psi.

Could it be that the valve on the left one has bcom a little weak and isn't able to sustain pressure, over 25psi?

Has anyone else faced such a problem?

Wanted to clear this doubt before i replaced the valve.

Shan2nu

Last edited by Shan2nu : 30th December 2005 at 11:16.
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Old 30th December 2005, 10:46   #2
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Looks like "Yes it is" from my review-textbook-read experience. But please wait till some of our senior guys confirm this.

Does it stay in 25 PSI or proceeds to go further down?

Surya
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Old 30th December 2005, 11:17   #3
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Quote:
Does it stay in 25 PSI or proceeds to go further down?
It stays at 25 psi. (Which itself, is dangerously low).

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Old 30th December 2005, 11:27   #4
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May be you have already checked this, but are you sure there is no minute puncture?
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Old 30th December 2005, 11:31   #5
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Shan,

Sounds like either a slow leak puncture or bad valve.
The most commonly practiced way of checking if your valve is leaking is to take a huge blob of spit, and dab it over the entire mouth of the valve. If it blows into a bubble, your valve is leaking. (Might also help to over-inflate when doing this test).
Yeah, sounds gross, but all the tire guys do it.

Alternatively, (or for a puncture) you could dump the tire in a tub of water and look for bubbles. Like mentioned in this thread. (Puncture, help!)

cya
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Old 30th December 2005, 12:42   #6
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Just checked the tyre by immersing it in a water tank. The leak is from around the valve. The place where the valve sits on the alloy.

Can it be mended or will i have to go in for a new valve?

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Old 30th December 2005, 12:53   #7
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Best bet would be to just pop in a new valve.
Usually the valve hole is a favourite place for rust, but since you have alloys i guess that isnt the case.
Get the wheel cleaned around the valve hole and a new valve should do the trick.

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Old 30th December 2005, 15:13   #8
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UPDATE : Got the valve replaced. Checked again for leaks but, none this time.

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