This forum has helped me many times just by searching for similar issue but this one has stumped me! I have 1994 Ranger XLT automatic; I get CEL frequently with hesitation and tailpipe smoke (sometimes white, sometimes black); checked OBD-1 codes and get 33 KOEO and 33 in memory; these seem to documented as EGR problem but this truck does not have EGR (they were not built with one if auto and non-CA); anyone else have similar issue?