Originally Posted by semtex

Dude, review the thread. I already explained the fix a couple of pages back. I even included a link to a DIY with pics.

Edit: Here's the link to the exact post. It's called the non-fouler method. You can also just stuff some steel wool into the port and apparently that works as well. Hope this helps! (Actually, I hope your HFCs never throw a CEL to require one of these fixes to begin with!) Stillen HFC vs. BERK HFC