A/C Help...Where is the low pressure port?

[bthomas515]

I was reading about how to recharge my air conditioning if I ever needed to do it, and can't find the low pressure port. I am not actually trying to recharge the a/c now(it blows fine), but its not as cold as it used to be. Also, just trying to gain some general knowledge I guess. I added an actual pic of an engine bay to help.

[-EnVus-]

Low side is usually the Blue one...Also you may need the old refrigerant removed and New installed if its not as cool
This must be done the Legal way

[joshk5145]

Like he said but most I've seen have an L on them.

[Barefoot]

the blue cap and the red cap are your service ports. which ever 1 of those 2 lines is bigger in diameter is your low side