new battery installation goes bad on 96 evinrude 150

[carlosburitica]

sounds odd but one of my batteries went bad so i decied to purchase to new ones, intellad them and went fishing....
started the engines nice and after 30 minutes in my first stop with engine off i see smoke coming out of the engine, literaly about to get on fire, so had to use my fire extinguisher for the first time in my life,.... well some how the regulator or the plug that connects the yellow wires to the stator where melted like if they were hit by a lightning.

inspected all the cables, replaced the regulator... fire the engine again and it worked fine for about 10 minutes until it started to run on limp mode, and tried to shut down the engine and it didn't die, removed the safety key pin and still running, tunrned the battery switch to off and still running, disconnected the batteries ans still running so i had to disconnect the plugs cables until it finally stalled... there after it did not want to turn on again, plugs got fouled... well i know this happens when it start to run in limp mode.... didnt check the power pack yet but it was replaced about 6 months ago...

clues here....

sounds to my like and electrical problem... but want to know a possible cause for it... new battery????? to many amps????
i am clueless with this one

 

[carlosburitica]

Re: new battery installation goes bad on 96 evinrude 150

i notived the voltimeter working the other way... the needle was all the way down to - even below the 0v line instead going up to 12 or 14v

 

[Chris1956]

Re: new battery installation goes bad on 96 evinrude 150

I doubt the battery is a cause. Is that a carb model? if so, it has no limp mode, and maybe one of the overheat sensors put it into slow mode. The black/yellow wire at the ign switch needs to ground to kill the spark. See if the ground wire (solid black) is connected the ign switch and see if it is connected to the black/yellow wire when the key is off.

Fire means a short. maybe the VR shorted? Check all the wires around the engine for melting. Check under the dash for the same.

 

[daselbee]

Re: new battery installation goes bad on 96 evinrude 150

Battery installed backwards? Reverse polarity?
It all depends on how you have your battery selector switch set.
When starting, do you have it set for only ONE battery? Then, under way, did you set the switch to ALL?

If so, and you mis wired one of the batteries when changing them, you placed a massive load on both batteries, and also the reg/rectifier, and even the selector switch.

Also, these older engines do not need a battery to run. They need it to start, but not to run. So, don't think that disconnecting the battery will shut it down. It won't.

If your engine will not shut down by the key switch, you can either pull plug wires (which you did) OR you can choke it off with rags in the carb throats. Obviously not easy to do with the silencer on...but it will shut it down.

You are going to have to go thru everything electrical at this point. No telling what is fried until you get in there and test.
For testing purposes, you can leave the yellow stator wires to the rectifier DISCONNECTED for the time being. It will not hurt anything.
Make sure your batteries are wired right, and that they are still good (battery test at auto zone).

A massive load on the system that burns up that connector and reg/rect will likely melt the stator too. Gotta look there.

Crank it checking for spark to evaluate the pack. Your optical ignition sensors are probably NOT damaged, especially if you have spark.

You got alot of work ahead of you. Good luck.

 

[carlosburitica]

Re: new battery installation goes bad on 96 evinrude 150

thanks a lot... i guess i need to go trought all the wiring first and the re test.......

 

[carlosburitica]

Re: new battery installation goes bad on 96 evinrude 150

found the first problem, now i know whay i did not shut off, once i replaced the regulator there were two ground cables that were not connected, they go to the on gear switch... now the engine shuts off.

but once the engine is running some times the voltimeter goes down from 12v to -0 and then it goes back to normal...........
voltimeter problem???????????

 

[Silvertip]

Re: new battery installation goes bad on 96 evinrude 150

A voltmeter measures system voltage. If it is reading zero then there is no voltage in the system feeding it or there is no ground on the gauge. Did you make sure the battery was installed correctly (not reversed polarity).

 

[carlosburitica]

Re: new battery installation goes bad on 96 evinrude 150

new update.
took the boat yesterday and so far is working fine, not the tachometer is not working consistently and the voltimeter looks fine, so far it did not go crazy like before.

sure the batteries are installed in the right polarity. apparently with the two new bateries i left the switch on with both batteries and i guess it was to much juice for the stator and the regulator and that is why cables got melted and eventually caused the fire. funny part is that i happened after the engine was turned off. of probable the regulator was to hot and with the engine off that was no water cooling it down.

now the boat is running fine again but need to go thru the dash board and find the reason of why it is not reading the right rpm.

 

[Jlawsen]

Re: new battery installation goes bad on 96 evinrude 150

I read through this and the probability that the original battery went bad because of a short in the engine wiring seems most likely where your problems begin in the first place. You could stack 100 batteries in parallel and never experience the problems you've had if there wasn't another problem to begin with. Replacing your battery didn't cause your problem it just made it worse.

 

[seahorse5]

Re: new battery installation goes bad on 96 evinrude 150

With the problems and symptoms that you described, I'll bet the stator insulation has melted into pools of plastic underneath the flywheel. You have to remove the electric eye, flywheel cover, flywheel and stator to inspect. A resistance test may show good but if the insulation is melted, then the stator has to be replaced. The erratic tach may mean the new regulator was also damaged.