So I have a 95 90hp Merc 2 stroke. Not under load it revs no problem but under a load speed and RPM's quickly pick up to 3000 RPM no problem. But it takes 2 min or more to go above 3000 RPM, and will peak at about 4300 RPM. It should peak at 5500 RPM.
Compression good 120 +-1 on all 3 cylinders...