86 merc classic 50wont stay running

[beefey]

ok this is what my motor is doing it starts really hard and wont rev up when is does. if you pump the ball it revs up it will idle for a few mins then it dies. if you put it in gear it will run all day and if you slowly pump the ball it revs a little more once you bring it back down to idle it idles fine for a bout 5 mins minutes then it dies again and the ball is soft. i tried a new ball i put new fuel lines in it cleaned the carbs any suggestions would be great. i also have another problem i put a new trigger in and a new stator but its not chargeing the battey it has to yellow wires that come down to a regualer i think does it mater which way those go and when i put a tester on the yellow wires i read nothing out of one and 9.5 out of the other is this normal or could the regulater be bad. thanks

 

[verado7]

Re: 86 merc classic 50wont stay running

when you say you cleaned the carbs did you take them apart and check the needle and float height setting ? if not i would take teh carbs apart again change the needles and set the float height .

- rebuild the fuel pump
- set the idle mixture screws ( i'll tell you how if you get to this point ) easy a lean idle mix will cause hard and no starts and stalling - but i think by the sounds of it you need to do at very least the forementioned .

not charging - sounds like a bad rectifier - it does not matter what post the yellow goes to - as long as its not the one marked + .

 

[beefey]

Re: 86 merc classic 50wont stay running

what is the height of the float supposed to be and thanks for the info

 

[verado7]

Re: 86 merc classic 50wont stay running

with the carb turned upside down manual spec is 1/4 inch - you can go to 5/16in. if your having trouble with flooding/bogging in rough water .