Over Carbonation In A Corny Keg

[hydroboy]

Saw this up in the article section (http://www.aussiehomebrewer.com/forum/index.php?showtopic=54589) , will direct the original poster here.

Hi everyone,

Long time viewer first time poster. Just new to home brewing but i dont do things by half. I went out and bought a keg fridge and kitted it out with two corney kegs two taps etc.
Ive been researching about force carbonation and tried it twice but each time i think i over carbonate it. I'm doing the 30PSI over 48 Hours method. Even when i get it right the first say four pints are carbonated and fine but i find that the rest of the beer seems to be flat. Im presuming that the Co2 is'nt obsorbing through the whole keg, mind you i have the Co2 connect on the "in" gas connector of the corny keg.
Ive read that if you're force carbontaing with a corny keg in the upright postion you should use the beer out connector so the beer gets carbonated from the bottom up.
Still get a third froth from the pours. Beer lines are 2M long.

Im also scared that ive i let out or shake the keg to let excess Co2 out that the beer might go flat.

Its seriously doing my head in trying to get the right pour.

 

[hydroboy]

Lots of variables here.

To start with...

What is the internal diameter of your beer line?
What pressure are you pouring at?

 

[littleshitdarcy]

Lots of variables here.

To start with...

What is the internal diameter of your beer line?
What pressure are you pouring at?

5mm @ 10psi

 

[hydroboy]

Sounds about right. Hows your pouring technique? Have you ever poured a beer before?

 

[Amber Fluid]

Another couple of Q's which may help...
How long are your lines and what temps are you trying to pour at?