Well title pretty much explains the problem i will give a little more depth. I sometimes have a hard time starting the motor but when i get it to run it runs pretty well except for just above idle speed. If i hammer down it does not sputter and runs like a raped ape. its just when im in a no wake zone on my lake i have problems keeping the motor running in the no wake area because im not able to go fast enough. what i have replaced, spark plugs, fuel line and prime bulb, oil injection lines. Im wondering if the timing maybe slightly off or if the carbs have to be rebuilt im hoping its just the timing can anyone give me any input on what they think or if they know what the problem is thank you. jim

Try any seafoam? Almost sounds like a fuel issue?

I would first think about just having the idle mixtures adjusted properly. If that doesn't help, then you might want to look at having the carbs rebuilt.

Merc's also run an idle control module that's suppose to help them idle smoothly. It might be bad on you're motor. Another thing, they have a high speed and low speed windings in the stator, might have a problem there. I would suggest seeking professional help though, all of these items are expensive.

I don't work on these welfare motors so that's about all the suggestions I can give you.

Yes i have tried seafoam and no real noticable results with that. i actually replaced the fuel filter yesterday took the boat out today seemed to be better but not what i really should be. the touchiness in the throttle seemed to have been better since replacing the filter but still has some of the problem i had explained earlier. For the last suggestion i was also wondering myself about the idle control but like you said i would have to take it somewhere for them to tell me if its bad or not. well thanks much guys i will be taking it in here shortly to have the bugs worked out of it im just tired of messing with it myself.