Automotive Air Conditioning Information Forum

What size O-ring should be used on an oil filler plug? My local shop tech says there is a leak there.

I pulled the valve on the right out of my low-side port. The replacement in my FJC assortment is the one on the left. Is it compatible with what I took out?


I contacted FJC customer support.

They said

So, the one on the left is the correct part which is 2676 and the one on the right that ...

I pulled the valve on the right out of my low-side port. The replacement in my FJC assortment is the one on the left. Is it compatible with what I took out?

So I bought the FJC 2663 assortment which is normally $50 from JB Tools via Amazon. But they had one that had been returned. Normally, I don't do this, but the price was < $15 including shipping! So I took a chance... a couple of late-model GM cores were missing but everything else is there and ...

My system is empty at the moment and I'd like to replace the R134a Schraeder valves as a precaution. I see a bunch of sets on Amazon, but would happily order elsewhere or even better at my local NAPA if someone has a recommendation on what to buy.

Thank you all! I am assuming the hoses need to be connected before I rotate the compressor to distribute the oil (it has caps on the outlets at the moment).

Ya know, for some reason, I am just now seeing this question and pic.
Of course, an AC line being close to exhaust equipment will most assuredly increase the hi side pressure. Or low side pressure.
INSULATE now. We would usually use fiberglass based exhaust wrap, it comes in rolls….have at it ...

I have a DIY new system with about a 1000 miles on it. It works, thanks to help here but I'm refining it this winter by rotating the compressor 90 degrees to get hoses away from the exhaust manifold. It's a Sanden compressor with the "V" fittings.

I had the system evacuated at a shop ($56... very ...

tbirdtbird wrote: Tue Aug 06, 2024 7:19 am Typically about $100.
Yes the machine will tell how much was pulled out.
You will not need to add any oil.
Yes, whenever the system is opened the R/D should be replaced.
Try to find a MACS certified shop, they are better trained.

THANK YOU!

If I take my car to a shop with one of those fancy Sun machines for AC service, how much should I expect to pay to have the R134a recovered?

Will the machine be able to tell how much got pulled out?

When I recharge the system, will I have to add any oil?

I am planning to do some hose alterations ...