Motor coughs

[saltlife321]

Hello. I have a 92 mercury 150

Hello. I have a 92 mercury 150 black max. The motor runs and starts fine but likes to cough a bit at idle and when it first starts up. Is this a carb problem or is it a timing issue? Any info would be helpfull. Thanks.

 

[beckerjs]

"when they sneeze they are run

"when they sneeze they are running lean, carbs set lean or gummed up."