I got the injector out today and went over to IOS to pick up the two o-rings. Since I was working with the rail in place and only the throttle bracket moved aside, I did not have much room for the two screwdriver method of removal. So I used a piece of shoestring as I had seen on this forum and lassoed the injector. That allowed me lift the injector up and out. It was in there pretty good after 19 years. Some penetrant allowed me to pivot the injector side to side to loosen it up, but it still took quite a tug to get the injector out.
The big o-ring looked fine. The little o-ring was not split full through but was cracked about half through on one side. The part that was cracked full through was the plastic cap that clips onto the spray tip. That cap stayed in the socket in the rail and did not come out with the injector. When I fished it out, I could see that it was cracked full through. The thing I am referring to as the cap is the white plastic tip shown in the link:
https://www.ebay.com/itm/8-set-For-1997 ... SwbsBXmFot
Is that cap integral to getting a good seal? What function does it perform? I don't see the cap itself shown on the fuel system parts diagram.
Any quick responses are appreciated as I don't want to put it back together until I know if that cap is mission critical or not.