merc 15 2 stroke coughing

[inadrum]

This is happening at low idle speeds. I guess you could call it sputtering. It sounds like a cough, then the motor seems to quit for 1/2 a second, then slowly revs back up to it's original Idle. If I'm idling slow enough it will stall. It always starts right up again.It also doesn't seem to matter if the engine is warm or cold, and whether not I'm running hard or just idling. Any ideas?

 

[ehenry]

Re: merc 15 2 stroke coughing

Sounds like a lean condition to me. Try richening the low speed mixture about a quarter to half a turn and see what happens. If it still does it go a quarter to half turn more.

 

[inadrum]

Re: merc 15 2 stroke coughing

Thanks. I'll give that a try this weekend.