2000 Ford Focus bucks

You may be experinecing the same problem I had in the ZX3. My car would be ok if the RPMS were high, but if I tried to accelerate, it would sputter and buck. I changed out the plugs and wires, and it was a little better, but not really. I changed out the coil pack, ($68.00 from a local parts store) and the problem is gone.
The coil pack is the black box that all the ingiton wires plug into, held down by 4 screws. It took a total of 10 minutes to change out.
I am not a mechanic, and I don't know much about cars, but changing the coil pack in my car made all the difference!

I am having trouble with the fuel system on my 2000 focus. Have replaced fuel pump regulator relays and filters. The car will crank but not turn over. It sounds like it is not getting any fuel. Do you think changing the coil pack would help me?

With my car, I was told, she was missing on the 1st cylinder. That's what lead me to believe the coil pack or spark plugs/wires were bad.
I had a car that would crank but not turn over, and it turned out to the timing belt. I am not saying that this is what is wrong with your car, but I would certainly check it out.