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Is my tank leaking?

#1 User is offline   Lovely_angel_ 

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Posted 25 January 2013 - 12:27 AM

I just got my hpa tank filled to 4500psi, and left it in my car for 2 hours at a temperature of 3 degrees celcius (37 F). When I got home, the guage moved to 3400psi! Whats going on? I listned very closly to the tank and heard zero leaks. Does temperature affect the air inside the tank?

#2 User is offline   andrewthewookie 

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Posted 25 January 2013 - 12:30 AM

Yes, temperature affects pressure. When air cools, it reduces the pressure. This is why all tanks seem to lose pressure after a fill, because the warm fill is reaching equilibrium with the surrounding environment when it sits.

This post has been edited by andrewthewookie: 25 January 2013 - 12:31 AM

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#3 User is offline   Lovely_angel_ 

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Posted 25 January 2013 - 12:33 AM

Oh wow i never knew that, but isn't loosing 1000 psi within 2 hours abnormal?

#4 User is offline   andrewthewookie 

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Posted 25 January 2013 - 12:35 AM

Maybe not, if you filled at room temp and it got to nearly freezing. If you want to check for a leak just stick the bonnet under water and look for air bubbles.
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#5 User is offline   Lovely_angel_ 

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Posted 25 January 2013 - 12:37 AM

m'kay i'll test that out and see what happens :D

#6 User is offline   Lovely_angel_ 

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Posted 25 January 2013 - 12:54 AM

Yea so i dunked it underwater and no bubbles....

Has anyone else experienced a massive loss of air like my situation?

#7 User is online   fatalreaction 

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Posted 25 January 2013 - 12:58 AM

it happens all the time... and yes it can be that "extreme" especially if its rapidly filledlike at some sporting goods stores, its completely normal from what i've seen

#8 User is offline   kingJurzy 

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Posted 25 January 2013 - 01:05 AM

View PostLovely_angel_, on 25 January 2013 - 12:54 AM, said:

Yea so i dunked it underwater and no bubbles....

Has anyone else experienced a massive loss of air like my situation?


Not that massive but I have gotten 500 psi difference.

View PostLime, on 04 May 2013 - 08:45 PM, said:

Dude, I wouldn't pay anymore than tree fiddy for a kingjurzy.


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#9 User is offline   Tech17 

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Posted 25 January 2013 - 09:47 AM

Yeah I have had mine drop about 400 in my tank

#10 User is offline   cybermaniac15 

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Posted 25 January 2013 - 10:04 AM

The most I've seen mine drop is 500 psi, but it could of just been the cold..

This post has been edited by cybermaniac15: 25 January 2013 - 10:07 AM

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#11 User is offline   III Kezia III 

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Posted 25 January 2013 - 10:23 AM

as long as you saw no bubbles you're fine, its completely normal.
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#12 User is offline   NJC 

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Posted 26 January 2013 - 12:09 AM

i lose about 500 psi from the hot fill effect. and my tank when i leave it in the trunk of my car (i'm in utah and we have 4 degree Fahrenheit nights) it drops about 800 psi. you are good as long as there are no leaks

View Post-ORaNGe-, on 18 November 2011 - 04:24 PM, said:

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