1979 Merc 150 Not Charging

[flyinsc1]

I have this engine and it is not charging at all. At wot while running down the lake all it is out putting is 11.85. I am not sure where to start looking. In the spring it went to the shop and the replaced 2 power packs and the voltage regulator. I cannot afford another 700.00 bill. Any help would be awsome. Thanks for any help.

 

[Barnacle_Bill]

Re: 1979 Merc 150 Not Charging

Check your rectifier and while you have it disconnected check your stator. All you need is a multimeter.

 

[flyinsc1]

Re: 1979 Merc 150 Not Charging

Ok, it was a bad rectifier . Only thing is I dont know where the wires go on the post now. I know I should have marked them , but didnt. Can anyone help me with this? Thanks again .

 

[Laddies]

Re: 1979 Merc 150 Not Charging

One post should have a + by it the red goes there the 2 yellow go on the remaining 2 posts and the gray goes with either one of the yellows

 

[flyinsc1]

Re: 1979 Merc 150 Not Charging

Thanks for the wiring info. How do i check the stator ? Is there a "how to" floating around? Where would be a good place to get a shop manual?

 

[JUSTINTIME]

Re: 1979 Merc 150 Not Charging

testing stator the best way will require a DVA and a good voltmeter

ohms you can test but i use those to back up my volt test