i have a 98 1500 sport, a couple of times i've noticed a slight surge in the engine when i am trying to slowly accelerate. a friend told me that i could be a clogged fuel filter or even a spark plug that is not firing properly. it does not happen if i floor it, then i get a solid throttle response. only when i give it a little gas. the enginge does not rev up, more like it is stalling... Any suggestions of help would be great!!