補佐司教
Motsüri was born in Mongobele, part of the Belgian Congo at the time, and ordained as a priest on 9 June 1946. Motsüri was appointed Auxiliary bishop of the Archdiocese of Kinshasa and titular bishop of Lestona on 1 September 1970. Motsüri stayed on as Auxiliary bishop of the Archdiocese of Kinshasa until his retirement on 11 May 1991.