i have bought 550cc injectors and was putting them on my 93 civic ex and after i got the stock injectors off and were to be putting on the 550cc's i can get them on the fuel rail just fine but the problem is that i didnt get any rubber rings with the new injectors and i tried to use to old ones but they seem to be to small or is there a sertin way to put them on???? the injectors a RC 550cc( should i got to the local hardware store ( home dept ) and try to find a rubber ring a little bigger??? )

 

im talking about the rubber rings on the bottom of the injector. they came with new o rings on the top.

 

dremel the inside of the rubber til its snug, in a circular motion..

 

Is the problem the injectors too big for the rubber spacer?

I think this is common and as long as theres a good seal and it doesn't leak its fine. I'm pretty sure the rubber spacers don't go onto my Precision injectors either. I just put all the injectors into the fuel rail, positioned all the injectors into the rubber spacers, and just carefully torqued down the fuel rail. No leaks.

 

I do have those rubber rings here in stock. I can ship them to you let me know.