2001 Malibu rough idle and engine ticking

[Manofsteel9945]

Well I got a call at work today that my girlfriends 3.1 V6 had a rough idle and the engine was "clicking" really bad. Hoping it was either the plugs or wires I replaced those when I got home, but just a I figured that was not the case.
So here I am and here's what we got:

2001 Malibu 3.1 V6
Check engine light flashes while driving (haven't pulled a code yet)
Rough Idle @ 2k RPM's and lower, still drive's o.k. and there is no "major" loss of power on backroads or highway
Engine is "clicking" and sounds very much like metal on metal
also pretty localized to the #2 piston area (nearest front passenger)
"Check Engine" flashing Was noticed after about 20mins of driving the car this AM
"rough idle" was noticed as she came to a stoplight after being on the freeway for about 10 miles.

Injectors were replaced about 2-3yrs ago from what she tells me
recently one of the injectors started leaking and I think it may be the O-ring because I can physically see and hear the leak

Any idea's? I have a few but don't really want to start thinking about them right now.

[cheerios1]

why don't u get the codes checked it's free at any Auto Zone or Advanced Auto and with the that kind of noise I wouldn't really be driving until you've checked out that noise....it could cease.....

[SPRaYeD9]

crash it

[bcopeland]

When I had that happen (twice in my 189K miles with my 99), it came back as cyl. 2 misfire and the #2/#5 coil went out both times.