Hey I've got the same thing happening.Runs like =
there's a
potato in the exhaust pipe. I've just rebuilt this 1.9.
I've checked timing, replaced all vacum =
hoses,replaced
distributor, cap, rotor, plugs. I am changing the fuel pressure =
regulator today.
I hope that is it, if not ??
maybe air flow meter (potentiometer).
Any help would be greatly appreciated
Mike