any ideas... motor skips, quick on take off , idles fine but under load skips ,only runs on 3 cylinders ? I have replaced all 4 injectors, both coils and module, all plugs and wires , checked compression 150,170 150 140 checked for vacume leaks none , replaced fuel filter and ran sea foam thru it and hooked it up to scanner cleared codes and unhooked o2 sensor (front) I am frustrated and open to ideas ?
