I have a Odyssey tri-toon with an I/O 3.0 Mercruiser. Boat ran great last year. Took it out this summer and after a few hours on the lake a starter bolt broke. Had to remove the engine to remove and replace the bolts. We also added the bracket that was missing on back of starter. That was successful (left wiring harness connected to the motor) just unplugged the major connections and with the motor back in the boat it starts and runs again. Took it on the water and after about 30 minutes while at WOT it dies. The ignition fuse blew. Replaced the fuse with a (30A - all I had) and looked over every connection and wire throughout the entire boat.
The next time out after about 30 minutes the main breaker pops (I know because the ignition fuse was too big). Anyway, I find a crack in the breaker and replaced it and everything tested great out of the water. Forgot to mention that we added a new bilge pump and blower, but those work flawlessly even when fuse blows those continue to work.
Just the other day I take it on the water again and it blows the ignition fuse while shifting, but it wasn't on the first shift it was after 30 minutes of running around. So on the water I replaced the fuse and while watching gauges etc. I shift over and over and the only thing I notice is the Volt gauge dropping and coming back to 14 during shifting. (Maybe part of the shift cutout switch) but never noticed it before. So as I'm shifting and trying to see what is going on the gauge stops dropping and it becomes hard to shift back into neutral. I take it home and inspect wires again and nothing is chaffed or lose etc.
Last night I start the boat and hold the shift cutout switch manually and nothing... boat does not shut off. My next effort will be to test the wires to the switch and also to test the switch.
My question is what happened or what got missed that will allow it to run great for 30 minutes and then blow fuses and now I can't get into neutral. I can't find the culprit.
*I have read all related posts on several forums, but there is never a solution posted. I have also printed and reviewed all the wiring diagrams for the motor.
The next time out after about 30 minutes the main breaker pops (I know because the ignition fuse was too big). Anyway, I find a crack in the breaker and replaced it and everything tested great out of the water. Forgot to mention that we added a new bilge pump and blower, but those work flawlessly even when fuse blows those continue to work.
Just the other day I take it on the water again and it blows the ignition fuse while shifting, but it wasn't on the first shift it was after 30 minutes of running around. So on the water I replaced the fuse and while watching gauges etc. I shift over and over and the only thing I notice is the Volt gauge dropping and coming back to 14 during shifting. (Maybe part of the shift cutout switch) but never noticed it before. So as I'm shifting and trying to see what is going on the gauge stops dropping and it becomes hard to shift back into neutral. I take it home and inspect wires again and nothing is chaffed or lose etc.
Last night I start the boat and hold the shift cutout switch manually and nothing... boat does not shut off. My next effort will be to test the wires to the switch and also to test the switch.
My question is what happened or what got missed that will allow it to run great for 30 minutes and then blow fuses and now I can't get into neutral. I can't find the culprit.
*I have read all related posts on several forums, but there is never a solution posted. I have also printed and reviewed all the wiring diagrams for the motor.