1994 Nissan Sentra LE 1.6 4 door auto

I am having a major problem with my car. The car starts, Idles fine, and goes into reverse fine. When I put in to drive there is no power and it acts like its not getting fuel.I can gently push the gas and it will go, but if I try to drive it normal it wont go. It has 104,000 on it. I have put in new plugs( bosh platnums) new wires, new distrubtor and cap, new altanotar, new fuel filter. I asked a garge how much it would be to look at it, and was told 80.00 an hour. I dont have that kind of money. Any ideas? please help:banghead:

don't know if you still need help at this point as is old post...seeing that no one else has posted
I will.
would check fuel pressure right off the start. believe should be 35psi at idle. if ok, do a quick volume test by run at idle, removing the regulator vacuum hose (pressure should go up) then run at 2500rpm...if pressure drops more than 2psi needs pump.

typically when the pumps go on these you may get a long crank during start.