Rough Idle....

[dougp]

I have a 25 horesepower Johnson that sputters and dies in the idle position. Once I get out onto the lake the motor runs fine with no problems at all. The only time that I have a problem with this motor is when I am getting ready to go out or coming in (idle speed). What would be the problem,and how could I resolve this? <br /><br />------------------<br />Douglas plambeck

 

[Yepblaze]

Re: Rough Idle....

I'd be leaning towards looking at the carbs. <br /><br />Are they (it) getting enough fuel at idle? (fuel pump or poor fuel line connection)<br /><br />Are they getting too much fuel at idle (leaky needle/seats)<br /><br />Are the idle circuits in need of attention?( dirty or need adjustment)<br /><br />Then if it is an older motor with points type ignition, Are the points and timing properly adjusted?<br /><br />Is it spitting a lot of gas back out of the carb intake?