Engine Performance problem
1991 Cadillac Fleetwood V8 Two Wheel Drive Automatic 107700 miles
We have replaced spark plugs, wires, dist. Cap, rotor, and fuel filter. The car runs but has a stutter in it. We have also replaced the oxygen sensor and still nothing. Can anyone help me? Going on 2 days and running out of suggestions. Anyone heard of manifold gasket leak maybe?