Originally Posted by MicVelo

Not really a "check freon" method but.... IF (meaning, not sure if Z has one or not, never looked and never incidentally seen one) the Z has a sight glass in the high side line (liquid line) from the condenser, this can tell you a few things but not that accurately.

With the car and a/c running, the movement of the fluid through the sight glass should be free and clear of any bubbles. If there are bubbles, system is definitely low (but again, that's all it says.... "low"; not "how low".)

However, even if the sight glass if free of bubbles, that doesn't mean the system is OK. It's just a thumbnail view of what's going on inside and it's more of a warning: "if there are bubbles, you have issues"

Originally Posted by turboed350z

ran to walmart, bought a recharge kit, charge it and now its blowing cold air. if it doesnt hold up, then i will have to find the leak.

side note, i need a new "L" cap... oem is a bit too big for mine.

Originally Posted by MicVelo

Good job, T'bo! Please report back on this in a couple/few weeks just so people know what to expect.

Originally Posted by turboed350z

will do. i bought the gauge and a 5 dollar can of r134a. 5min and the ac blows cold.

lets hope theres no leaks. so far the pressure was holding. but still too soon to tell.

Originally Posted by 92K1500

If it needed freon put in, it has a leak. It doesn't just go away. My 93 F150 has never needed topped off on freon and it still blows cold.

Originally Posted by 92K1500

If it needed freon put in, it has a leak. It doesn't just go away. My 93 F150 has never needed topped off on freon and it still blows cold.

Originally Posted by turboed350z

Really? I was always under the impression that it was a maintenance item type thing. Admittedly ive never have a car long enough to ever required it, but it was just my assumptions.

Originally Posted by rancor

An AC system should not leak if it is working correctly. I have heard it helps if the system is used frequently so try to use it more often that one a year.

EDIT- looks like MicVelo said it better

Originally Posted by MicVelo

It is a "maintenance item" SORT OF. Older car, compressor seals wearing from drying out (which is why it's a good idea to run the A/C at least once a week) resulting in slooooow leakage.

Just a natural age progression thing. Some do it, some don't.

Originally Posted by turboed350z

Been a month and so far, the charge has held up fine

Originally Posted by Tickytack

I have an AC Leak on my Nissan 350z (2005). I have taken off the intake manifold and injected AC Leak Die on the low side with the engine off. I do not see any leak using a Black UV Light on the low and high side AC Lines. I see a glow along the joint for a bigger hose running from right to left below the AC System/ Engine. What is that hose because I notice a puddle of UV Leak Die on the bottom of the tray most likely coming from that bigger unknown hose?

Responses would be greatly appreciated!