Check that the throttle pump is working well, and if it is check the timing.
Bill

"Michael McKnight" wrote in message
om...
Greetings!

I have a 1990 SeaRay 160 with an Alpha 3.0L 130HP I/O. The engine
seems to rev fine when not in gear but under load I get hesitation. I
push the throttle all the way down and I don't get any sputtering but
the engine will kind of lull for a few moments and then start to rev
up.

I have done what little checking I know how to do. I have taken out
the plugs and inspected them and they all seem fine except for number
2 which has, what I would consider, excessive carbon build-up. I have
not check compression or anything else really as I do not have the
proper tools.

I know this is probably a little vague but I hope someone can help me
out here. I am certainly not opposed to do anything I can myself
before taking it into the shop which is about a 2 month wait!

Is the carbon build-up something to be overly concerned about? The
boat is not used all that often, maybe once a week for a couple of
hours.

Any help would be greatly appreciated!

Thanks!

Mike