1985 Lincoln discharging black smoke

Hello I have an 88 lincoln with 183000 when I stomp on it it scats with no promblem. Now have you had your o2 sensor change that the one on the manifold you have 2 if you havent change those it is the sensor which controls the computer in the car sending out faulty info causing the black smoke before your spend the money on that part you also what I do is check with your local lincoln dealer they give the info you need that what I do when I have a problem with mine that whats keeping it running so good good luck