Mercury 135hp out board

[Genepngn@gmail.com]

I have twin outboard 135 Mercury 1988 one is over charging one is not charging

 

[Chris1956]

Well that motor has both a rectifier and a voltage rectifier listed. I am not sure how that system would work.

You can at least test the rectifier on the non-charging motor and replace it if it is bad. That might fix the charging system on that motor.

 

[Chris1956]

Sorry, fat finger typing mistake. I meant voltage REGULATOR.

 

[Genepngn@gmail.com]

Thank you I will test the rectifier. I read a few posters that said if you disconnect the batterie when the engine is running it will damage the rectifier.
Guilty I did this on both engines because the batterie was dead on one so I disconnected from the running engine to start the other.

 

[Genepngn@gmail.com]

Rectifier was bad i replaced it still not sure if its charging checked at the battery running about 2500 rpm in neutral voltage at the battery 12.45v
I don't know if this is next issue is related, with the engine at idle it will stall and wont restart i smell gas like it flooded if i let it sit for a few min it will start but same thing stall it will run fine at higher rpm

 

[Chris1956]

The easy way to test the charging system is to measure the battery voltage with the engine off. Now start the engine on a flusher and set to fast idle. You should see more voltage with the motor running.

Your fuel issue sounds like the inlet needles and/or floats are worn. Floats are not avail for some of those older V6 motors, so check to see if you can get them, before rebuilding the carbs.

 

[Genepngn@gmail.com]

Thanks for your help