Did a compression test on my 1998 90 hp 2 stroke yamaha ( C90 TLRW) Got between 50 and 52 psi on all three. From what Iv'e read, that seems low. I pulled all 3 plugs, throttle wide open and turn it over 5 or 6 times. Checked it twice. It runs fine, has enough power to pull two people on a tube. Need some feed back.
