My system uses an 0rifice tube. (Use a zero ‘0’ instead of an ‘o’ to keep the site software from censoring the name – if someone is offended by ‘0rifice’; they need to get a grip )
I have been running the system and following the diagnostic charts in the service manual – the GM service manual. And the system shows no signs of a problem with the 0rifice tube. I have found one problem so far and fixed that and the system is stabilized. I’m shopping for a guy to evac it and recharge. I’m real curious to see how much is left in the system.
Which is funny, that problem I found, was a torque problem – a torque spec that for the life of me I can’t find in the manual.
That schrader valve I put in? Wasn’t tightened enough. Tightened it some more and the leak stopped.