Help! My Bigfoot hesitates and it's almost the 4th!!

arcticz28

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Joined
Jun 26, 2015
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Hi everybody! Yes I'm new, and I don't know what to do!

I have a 2000 Mercury Bigfoot 3cyl 4stroke carberated 40hp On the back of my pontoon

My issue is the engine hesitates/chokes/misses at about 3000 to 3400 rpm when accelerating. once I get past the initial "hesitation", then it smooths out. Otherwise it hesitates everytime I accelerate like clockwork. Any common issues that would pertain to this?? I have cleaned the carbs, replaced the crank sensor, and those things didnt fix it!
 
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