The upper motor mounts on my 225 loosened up so the motor and everything connected to it had to be removed in get to them. The local Honda dealer couldn't get to it for 3 to 4 weeks so I have a good friend that works on marine motors, but not Honda, who was willing to help me do the job. I order all the parts and the job went smooth. It was just unbolting everything, tightening the upper mounts and then putting everything back together. I bought a Honda shop manual and everything was done according to it. We finished with it and took it to the lake for a trial ran and as soon as it cranked I got an alarm. The impeller was replaced and I had good water pressure and a good stream from the motor and I replaced the oxygen sensor about 3 months ago. I don't know what the oil pressure was because I don't have a oil pressure gauge. I have a 2003 Ranger 521 that doesn't have a lot of gauges and hardly any lights that tell you what might be wrong. There wasn't anything wrong with the motor before except the upper mounts were loose and as far as we can tell everything was plugged back in and hooked up (no extra bolts or part left over). I need some expert help. Does anyone know what it might be?