99 D16Y7
I finally apparently located my ac leak. Wondering how I'd go about fixing this, as I've never worked on ac systems before. Do I just need to tighten the hose down or do I need to replace a gasket?

 

If those are original o-rings, they are 24 years old...

I would take it to a shop and have them evacuate the system and perform a vacuum test.

Those o-rings would be good to replace, others might be ready as well.

I just did all of mine - click my build thread and check the last few pages.

 

My CRV had the same bad oring. I ended up replacing the compressor, condenser, dryer, ecaporator and thermo exp valve. Cleaned all of the AC lines and replaced all orings with OEM. Its around 95f in SoCal and the AC in this car blows 42-48f.

Theres tons of videos on YouTube on how to properly evacuate AC and recharge. On the surface level its not all that difficult if you have the proper tools and process.