timingchains don't usually make a "ticking" sound (if it did the timing would be sooo far off that the engine would run shiatty) a use a long screwdriver or a piece of vacume hose or get and a mechanic's stethascope and locate the sound..i bet you will prolly find it to be the injectors(o.k.)lifters(change the oil) or the rocker arms(adjust the valves)
I have the 2.2 as well. I just posted a while back about the ticking in mine. Seems to be the general idea that it is common for these engines. Mine will make a ticking sound till it warms up then it fades away. I wouldnt worry about it too much.