did you see any significant difference form the damper you purchased from SNG and injectorplanet?

 

There are a couple of differences using the new one from SNG as the reference, the o-ring is black and a couple of the tines are closed so they will need to be opened. The inscription on the bottom is the same other than one section which may be a date code or manufacturer id.

 

I got the fuel damper changed on both rails yesterday; the one that was leaking, it seemed like the o-ring had hardened compared to the two new ones which was what I suspected. Putting the new dampers into the rail requires some patience and silicon grease; you need to apply pressure to the damper until the tines clip over the flared end of the port that they sit in. If you are using a refurbished item as was the case for me on one side, make sure the tines are not crimped closed or the damper won't be seated correctly as it will not clamped over the flare. Also, since the injectors will pull out of the manifold as you dismount the fuel rail make sure you have new injector o-rings on hand. I found that one of these had been damaged either when the engine was built or there had been work done sometime in the past. Again patience is important as the injectors are removed from the rail, they are a very tight push fit. On reassembly silicon and care is important.
From start to finish the job took about two and a half hours with two of us working.
I hope this post is useful.

 

Ditto

 

Well done....

 

So, in the end, did you have a leaking damper, or a failed o-ring? I realize it is a lot of work to get to these parts, and taking a chance on replacing just the o-ring may not be time well spent.

Thanks for sharing this project.

 

My guess is that the o-rings had gone hard which would explain why the problem was more prevalent in colder weather.