Electrical problem driving me Nuts

[BLU LUNCH]

Once again my Searay electric problems is driving me nuts. It has a 3.0L w/curcuit breaker. Last week when you turned the blower on it would just kill the the motor dead. I cleaned all the battery conections. Today when I started the motor the volts was pinned at 18 volts...then dropped to 13 volts. The boat ran fine for about 2 hours. Then with no warning the boat quit,no backfire,no nothing. Turn the key nothing but all the other accesories worked, after 5 minutes or so I hit the key and it started up like nothing happened.......any clues?

 

[loadnet]

Re: Electrical problem driving me Nuts

Check to make sure you have water in the batteries..<br /><br />They'll go dead then mysteriously come back to life if there is no water in em.. or low on water.<br /><br />They can also cause your volt reading to go sky high...

 

[BLU LUNCH]

Re: Electrical problem driving me Nuts

The battery is the sealed type.

 

[loadnet]

Re: Electrical problem driving me Nuts

Sounds like the wire feeding your coil could be grounding out or have a break in it somewhere along the line.<br /><br />One way to check it to run a jumper wire from the battery positive to the positive side of the coil AFTER the engine is running then take her for a ride and see if the problem duplicates itself..<br /><br />If it does NOT, then at least you'll know what wires to begin working with.<br /><br />Don't leave the 12 volt jumper hooked for too too long as the coil only requires 7 to 9 volts after STARTing the engine.<br /><br />The ignition switch may be acting up in RUN mode loosing juice now and then.<br /><br />By putting in the jumper wire you eliminate all those wires so testing later on will most likly have to start at the ignition switch if you find that coil wire positive feed to be the culprit.

 

[Ralph 123]

Re: Electrical problem driving me Nuts

Sounds like the regulator circuitry in your altenator is flaky. The clue is the pinned 18V and when the system is called to supply current it's dieing. That's where I'd spend some time investigating.