Complex sentence: This engine still suffered some lead-fouling problems in service and was succeeded in 1983 by the O-235-N2C which featured a different piston design and a redesigned combustion chamber to reduce this problem.
Split into simpler sentences: This engine still suffered some lead-fouling problems in service. In 1983 it was succeeded by the O-235-N2C which featured a different piston design and a redesigned combustion chamber to reduce this problem.