2003 DF9.9 won't run well after carb cleaning

[Mainemarina207]

I'll say it right away, I screwed up. I cleaned the carburetor and put it back together. I start it up and between mid-throttle and full throttle there is very little difference. It's getting fuel and sparking on both plugs. I guarantee it's something I did wrong with putting the carb back together, but even the Mercury manual isn't definitive on what I did wrong. PLEASE HELP.

 

[tlewis1]

Shine a light down the carb and make sure the butterfly is opening all the way. There is also no harm in pulling the carb again and going through it. Try to find a parts break down and some pics of the carb online to help assist you. The manuals don't get into great detail on carb rebuilds.

 

[Silvertip]

Did you disassemble the carb "completely", removing all jets and flushing all cavities and passages? If not, then there is still crud that you dislodged and it got stuck somewhere else. If there are mixture adjustment screws on the carb, did you remove them for cleaning? When you reassembled did you properly adjust them.

 

[FirstTimeSeaLegs]

Did the motor run fine/ok/rough before the carb rebuild?