poping fuse

[flymaster]

Hi I got 1997 3.0lx boat has been reunning fine until today. I was sitting at dock in idle all of a suden my gauges started jumping around
and the boat stalled. When I tried to start I got nothing found out blow the ingniton fuse. I replaced with new fuse and tried to start it it cranked for
2 seconds and blew the fuse again. I tried to trace wires back to see if they where lose I could not find anything I even replaced the ingniton switch
it did the same thing. This past spring I replaced the alternator,new module,cap plugs,rotor,battery,wires. boat ran exclent.
Now this any........ Ideas on where to check for a short or somthing.

 

[64osby]

Disconnect everything on that circuit. Start connecting one thing at a time. Test with meter or get a bunch of spare fuses. When the fuse blows or the meter spikes on one particular item that's the culprit.

 

[flymaster]

Could a wet alternator cause this problem??? My engine hatch was not all the way on the night before I used it and it rained like hell

 

[mla2ofus]

if it doesn't blow the fuse until you crank it sounds like the problem is between the switch and the starter solenoid or in the solenoid or starter.



Mike

 

[flymaster]

just tested my alternator I am reading 14.39 then I checked battery got almost same reading. Is my alternator over charging when the motor is running?
When boat is off I get 12.35 from battery and same from alternator. This is what I think is blowing my fuse? I also saw a puff of white smoke from the main ground
to the engine.

 

[NYBo]

Those voltages are about right. Besides, it's amperage that blows fuses. You have a connection problem at the main engine ground, and that could be the problem.