My car has developed a tapping noise that is very pronounced when the engine is cold and under power. Not discernible when it is idling or coasting. Tends to go away when it is completely warm but still faintly present. Sounds like it is coming from the rt side of the engine although I know how tricky noises can be to trace down. Anyone else experience this on a V6? I know the Hemi's have the famous tick but this is different. Car has 10K miles on it now...