1980 datsun 280zx rough idle and acceleration issues...PLZ HELP!!

[RianTheBear]

I recently had to replace the fuel pump in my 280zx, the car was running great untill the pump started to die on me, once i replace the pump though, fired it up and its still running super rough. I went and replaced the distro cap and rotor, plug wires and plugs to see if that would solve the issue. it sounds almost like the motor is missing under load of acceleration.

anyone have any idea what the issue is, i know that this is a old car. and i should post this in the old school section but i cant post there cause im a new member and restricted.

any help would be greatly appreciated.

Thanks,
Rian

[RianTheBear]

replaced the fuel filter today, i also pulled the cam cover off just to have a look see, found i had a stuck valve. worked it loose now she runs like new again...