ok so i just recently bought an 86 ford ranger and it was running horrible when i first got it i have replaced the plugs, wires, cap, rotor button, ignition module, and the electronics inside the distributor, timing belt, fuel pump, gas tank, fuel filter, and it still runs really rough and is lacking some power i cannot figure it out and i made absolutely sure that i lined up all the timin marks correctly when i replaced the timing belt i was just wondering if anyone has any ideas it runs alot better but still seems like it should run better oh yeah it has the 2.3 liter gas motor with efi

 

Not trying to be a jerk but, I'd recheck timing marks again. Might also see if the distributor shaft seems worn... maybe the exhaust is starting to plug up?

 

look at your injectors the filter may be clogged in the top of them. happend in my 89 2.9 ranger