1977 Merc 110 9.8 Sputters at high RPM

pcmxa

Recruit
Joined
Mar 2, 2012
Messages
4
Ok,

I have been over the motor a couple of times and everything seems good (but I am a newbie at this). However, I am having a consistent problem. The motor idles well at lower RPMs. In fact it runs very well up until about 90-95% throttle, then it sputters, like it is being starved or something. If I open it up to 100% WOT it runs fine again. Any suggestions on where to start with trouble shooting? Thanks for any help. I only have about 10 days left where I can use it on the water, so am hoping for a quick fix, even if it is a dirty solution, then I will have all winter to fix it right.

Patrick
 
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