I'm sure that somebody else will be able to come along behind me and respond more eloquently, and a lot of this is probably covered elsewhere on the site, but
the short answer is no.
Threating to take action on a player, when you personally don't have admin powers can often cause more trouble than its worth. Several times, as an admin I've found that some people like to challenge my authority once warned. If this progresses unchecked, it can lead to a severely disruptive server once the troublesome players realize that you
can't actually take action on them. It's a lot like pointing an unloaded gun at somebody. Sure, it might scare off some people, but if somebody else comes along with a loaded gun, you're pretty much screwed.
What you can do. You
can politely ask them to stop, without specifically threatening to kick a player. Most pubbies won't know whether or not you do have actual admin powers, and many times a polite request along the lines of, "<insert name here>, please watch your language on eGO's servers" will be enough. Hopefully, you'll get an apology, but don't sweat it if you don't. Simply letting the players know that there is a watchful eye on the server can make a lot of difference.
What if a player continues to be disruptive? Contact an eG or an eGO immediately. eG's have the power to kick and mute, but eGO's
also have the power to ban. Feel free to add me to your Steam Friends list, as well as any other admin in the clan. If you have a problem that requires action, just PM one of us, and if we're available, we are all
more than happy to hop in a server and take care of the issue. Our "punk free" servers are the reason that most of us joined eGO, and we have all made a commitment to keeping them clean. Just like you are trying to do.

I also encourage you to try to get to know some of us in server or on Vent. The better we know you, the more we will be able to trust your word on issues.
Other ways to contact an admin? If you can't contact an admin on your Steam Friends list, make a post in the chatbox and/or try to contact somebody in Vent. With as many eG's and eGO's we have around here, you're bound to attract somebody's attention. I hesitate to suggest you go as far as posting in the forums since I myself am not sure what the Council's policy on that is, but I can hazard a guess that nobody will be mad at you if you are requesting admin on a server that's gotten horribly out of hand.
For further reading, I suggest you check out the following threads
Lastly, I want to thank you for asking this question. I'm sure this is a question that's come up before, and it also indicates that you are just as committed to keeping our servers clean as the rest of us. That's a good thing.
So, any more questions?