Engine Revving When Accelerating

[danharold]

I first want to thank everyone for your help. Being a new Suzuki owner its been quite a transition. I have finally finished hooking up motor. Started it and it idles fine. Starts right up. When I accelerate and hold it in place it revs on its own. Is it not get fuel consistently? Any ideas?
Thanks
Dan

[Harper]

You mean it's surging up and down in RPMs? On the muffs, or in the water? In gear? A little more definition, please.

[catacom225]

Dan! at what rev range are you talking about. It could possibly be in safe or limp mode if you are taking the revs over 3000 RPM

[morganf83]

Also 4strokes are designed not to rev over 3000 in neutral so revving it past that on the hose doesn't mean anything is wrong.

[henpecked]

similar problem perhaps

I have a [perhaps] similar issue with my 300s. I originally had 2008 models, with all the "bells and whistles". I noticed that while cruising, particularly running offshore in slop, the engines would rev/race ahead, then slow back down to the original cruising speed. I just repowered with new 300s, and during the first ride yesterday, I noticed the engines were doing the same thing, except in very calm conditions. First time it happened it raced from 2900 RPMs to close to 4000. I did not change out anything with the repower except the engines, the gauges and some of the harness connections. Mechanic suspects control box. Any other thoughts? Many thanks in advance.