My Yamaha Sputters

[Wishmaster]

Question 2002 200hp ox 66 Yamaha sputters after running 30 minutes been fuel system changed plugs I think I have a bad coil sputtering only happens after running a while

 

[GA_Boater]

Wishmaster

Welcome aboard.

Started this thread for you after you posted in a 4+ year old thread. Please read the Help Tip on top of the page.

I can't help with a Yamaha, but some of the knowledgeable folks will weigh in.