FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
I have a 2010 Mercury Optimax 150 2 stroke. We changed the water pump and L/U oil about 75 hours ago. Today while on the water the boat would not run over 30 MPH without the alarm sounding. It appears that the water pump is still good because it has a solid stream of water coming out and the...
