ctzdavis

I recently noticed that when I get on the throttle (Every once in a while) the power seems to be lacking. It acts as if it is not getting fuel. Brand new fuel filter. The transmission fluid is good as is all the filters. It does it when the engine is cold and I have to back off the throttle then it picks back up. I watch the tach when it happens and the RPM does not drop. Anybody have any ideas?