This just keeps getting better and better. I repaired my seawater pump, put everything back together and the boat wont start.
Im working with a 2010 Mercruiser 8.2mag. Serial 1A351574.
I thought it must have something to do with the fuel system because i had to move the cool fuel pump out of the way to get to the seawater pump. After checking everything, i found a bad fuse. I replaced the fuse and tried to start it again. Still wouldnt start. Checked the fuse, it was blown again. Checked all the wires to the fuel pump and they all seem perfectly fine. I disconnected the lead to the cool fuel pump and turned the motor over. Obviously it didnt start. I checked the fuse and it was fine. Id didnt blow. I reconnected the lead to the cool fuel pump and turned the motor again, blew the fuse. I replaced the fuse once again and turned the ignition on but didnt try to start the motor, the fuse was fine. Cranked the engine again, fuse blew again.
Assumption....one of the motors in the CFP (cool fuel pump) is shorted. Removed both motors from the CFP and connected each to a power source off the boat and they both spun fine. Considered that i may have pulled too hard on the wires where they come from the CFP and possibly caused a short that way. I put the pumps back on the cap of the CFP and reconnected it to the electric for the boat. I cranked the motor and the fuse was fine.
So this now raises a bunch of other questions but i just put it all back together and when i cranked the motor, the fuse blew yet again.
Now im wondering if something else could be causing the fuse to blow once the system builds pressure. Then realized that isnt likely because the pressure line from the pump to the fuel rail wasnt connected when the fuse blew on the last test.
When i had the pumps out and powered them from a 12v source i should have put a fuse in the circuit to see if it blew the fuse out of the boat. (possibly drawing too much current?)
Is there any diagnostic i can do with the rinda software that might help me with this?
Thoughts?
Im working with a 2010 Mercruiser 8.2mag. Serial 1A351574.
I thought it must have something to do with the fuel system because i had to move the cool fuel pump out of the way to get to the seawater pump. After checking everything, i found a bad fuse. I replaced the fuse and tried to start it again. Still wouldnt start. Checked the fuse, it was blown again. Checked all the wires to the fuel pump and they all seem perfectly fine. I disconnected the lead to the cool fuel pump and turned the motor over. Obviously it didnt start. I checked the fuse and it was fine. Id didnt blow. I reconnected the lead to the cool fuel pump and turned the motor again, blew the fuse. I replaced the fuse once again and turned the ignition on but didnt try to start the motor, the fuse was fine. Cranked the engine again, fuse blew again.
Assumption....one of the motors in the CFP (cool fuel pump) is shorted. Removed both motors from the CFP and connected each to a power source off the boat and they both spun fine. Considered that i may have pulled too hard on the wires where they come from the CFP and possibly caused a short that way. I put the pumps back on the cap of the CFP and reconnected it to the electric for the boat. I cranked the motor and the fuse was fine.
So this now raises a bunch of other questions but i just put it all back together and when i cranked the motor, the fuse blew yet again.
Now im wondering if something else could be causing the fuse to blow once the system builds pressure. Then realized that isnt likely because the pressure line from the pump to the fuel rail wasnt connected when the fuse blew on the last test.
When i had the pumps out and powered them from a 12v source i should have put a fuse in the circuit to see if it blew the fuse out of the boat. (possibly drawing too much current?)
Is there any diagnostic i can do with the rinda software that might help me with this?
Thoughts?
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