Mercedes-Benz 220SE

1980 Mercedes-Benz 220SE Fuel System Malfunction When driving Always

My car has a DOHC 6 cyl. 110 engine.
When cold, it runs too rich, as soon it warms up to working temperature the mixture seems to be ok, but just after a couple of miles, it;s not smooth at iddle and hesitates when you accelerate.
plugs are new (bosch platinum single tip gap 30")
distributor cap and rotor are new as well.
This automobile has very few miles since new (32.000)
always kept with fresh gas and stabilizer. Gas pumps and filters were replaced 2 moths ago.
Warm up regulator and or fuel injection are my possible questions. What should I do at this point.
Thank you.
george

Have the TPS sensor checked to see if it not send a false code. An O2 sensor could also be a factor.
Good Luck,
Paul