For those trying to fix the leak, here are a few pictures of my old damper. I'm not going to replace it, new part is about $90. I just cleaned inside, hoping the leak will stop. Might look for a replacement o-ring, any idea who might have it? It has to be gasoline resistant (fluorosilicone?).
I would forgo trying to fix-up this dying part, and get a new one. I just got one at NAPA for $75. It seems that these parts are as rare as hens' teeth, as every part store had to order it in, and all the others wanted $135+
What in noticed is, around the crimp edge, is where the actual leaking was occurring. When I looked inside, there was a crack, which means it was leaking past the damping diaphragm, and getting to that seam. Since the fuel rail is under some serious pressure, it was slowly (in my case) pooling a little on the top. Really stank up the car when the blower and heat was on!
It took a week to get the part in, and I wansn't so interested in driving my Wife's mini-van...so I very carefully sealed it up with a bead of JB weld. I let it set for 12 hours (over night) and put it in, in the morning. No more leak!
Yes I could have left my JB weld special in place, but I figured that the part is there for a reason, so I felt inclined to go ahead and replace it. Beside, I had noticed my idle had become rougher, as of lately, and I was curious if there was a connection.
I replaced it, and I was pleasantly surprised, that when I started it up my idle was smooth again!
Yes I know there are those who feel the fuel damper isn't necessary, and I suppose it really isn't, except that it seems to help smooth out the pump pulsation, at idle.
If you are on the fence about paying the $75 or not, I would recommend buying it. It is worth not having fire in your engine compartment, and your engine with thank you at a stop sign.\