pulling problems

I have a 1991 honda crx and it runs good on flat ground but when going up hills does not pull hard it just runs about 20 when I first got it it would run good and pull hard and keep pulling I've changed plugs and pulg wires and fule pump Ho ha when I turn the distributer it dose not do any thing and the cat back is roated off would that have any thing to do with it. let me know i need help bad SORRY SO SLAPPY

if it started running worse after u change the plugs, plug wires, and the fuel filter; then start swapping the old parts back on one at a time to find wut caused the problem. if u used cheap autozone plugs and wires, then that's mostlikely the problem. if u put in a hi-flow fuel pump w/ out completely rewiring the circuit for it, then thats a good posibility. now if it was before hand, and the changes were in an attempt to find the problem, then don't bother changing back. however wut model do u have? hf, std, si??? it might just be that it's the whimpy motor and in that case it will do that on hills. besides, trying to fly up a hill is torture on u'r drivetrain.