Wellcraft Boat Owners Forum

Just bought a 2004 wellcraft with a 200 Yamaha ox 66 on it, all cylinders show 85 psi, is this o.k. Or should I be looming for new powerhead. Thanks. Hayair

normal compression should be 125-150 but there are a lot of factors that will lower the #'s things like partially open throttle and so on. I have never had an engine that showed the exact same # on all cylinders always a lb or 2 different. try running the motor for a while so everything gets lubed up then retest it