J jy951 Well-known member Joined Feb 8, 2015 Messages 56 Reaction score 0 Mar 15, 2015 #1 I've got an 80's mercury 9.9 hp two stroke motor that has a little over 90 psi compression in both cylinders. Is this too low to run properly? Is there a minimum? Thanks.
I've got an 80's mercury 9.9 hp two stroke motor that has a little over 90 psi compression in both cylinders. Is this too low to run properly? Is there a minimum? Thanks.
Pappy Well-known member TinBoats Supporter Joined May 15, 2010 Messages 3,667 Reaction score 325 Location Central Florida LOCATION Lake County, Central Florida YOUTUBE https://www.youtube.com/results?search_query=pappyfromthekeys Mar 15, 2015 #2 Should run okay with those numbers