Help please, engine hesitation

[nurspecsil]

Ok my 95 240sx has been hesitating badly in and around 3500rpm-4500rpm when I am accellerating hard. At first it was obvious my clutch was slipping (smells terrible) so i replaced it wil a brand new nissan clutch, while installing the clutch I discovered my clutch master cylinsder was screwed so I replaced that. Once the tranny was off I could see that the flywheel was goin to need to be machined so I sent it away and got that done. I then put it all back together and the clutch grabs fine now but it still hesitates. I can actually feel the car's acceleration slow down when it hits around the 3500rpm mark and then speed up againaround 4500rpm.

I am guessing it is something to do with the fuel system now, anyone have any ideas or similar experiences??

Thanks,
Chad

[datkwikracer]

might seem kinda obviuos but have u changed the feul filter. I think those should be replaced every 10k or so(get a 300ZX one if u do need one, cheaper and better.)