siwash Posted June 26, 2022 Report Share Posted June 26, 2022 (edited) So I ended up buying a 16' with an 18HP mid-80s Merc. A few of you may recall that I was asking questions about boat buying as I shopped for one for a few weeks. Boat's okay... price was so so... we will see when I get it out there. Seller started it after multiple tries. Seemed to work after it warmed up. At home, started after about 5 pulls or so.. not bad. In forward acceleration, the engine seems to perform well. In reverse as well... But, in neutral it idles poorly and dies after e few moments. It seems to shake and vibrate then almost backfires (if that's a thing with outboards?) I should try to post a video (if possible?). Is this a carb issue? BTW, I changed out the gas and bought Shell Premium and added Seafoam. Maybe if I leave it overnight, the seafoam will break down some of the guck? Should I change out the plug and clean the carb? Thoughts? Edited June 26, 2022 by siwash Link to comment Share on other sites More sharing options...
siwash Posted June 26, 2022 Author Report Share Posted June 26, 2022 BTW, seller has not cleaned the carb. Link to comment Share on other sites More sharing options...
pics Posted June 26, 2022 Report Share Posted June 26, 2022 Seafoam will only do so much. The carb will probably have to be removed and cleaned.. one tiny piece of gunk will cause a poor running condition Link to comment Share on other sites More sharing options...
siwash Posted June 26, 2022 Author Report Share Posted June 26, 2022 okay, thanks... and what about spark plugs? Link to comment Share on other sites More sharing options...
Fisherman Posted June 26, 2022 Report Share Posted June 26, 2022 2 stroke, yes change the plugs. 1 Link to comment Share on other sites More sharing options...
AKRISONER Posted June 27, 2022 Report Share Posted June 27, 2022 New plugs, pull the carb and clean it right out with carb cleaner. good luck Link to comment Share on other sites More sharing options...
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