What should my compression be on a 1989 mercury 90 two stroke? 44 viewsMarch 20, 2018 0 tms20.26K Posted March 20, 2018 Doug Coviello asks: What should my compression be on a 1989 mercury 90 two stroke? Top Skiff Links Fishing Hats April 6, 2018 Skiff Boat April 6, 2018 Skiff Life July 15, 2017 Original Post 0 Answers ActiveVotedNewestOldest Register or Login