200 optimax help please

Alright guys, I have 99 200 optimax that it cutting out when getting on plane. Reeves up to 4000 rpm quickly and then stalls for a second or two before rpm increase. Also noticed a slightly rough idle. Just replaced all plugs and found a loose fuel line that I tightened up but it's still doing the same thing. Thought maybe a coil pac going out but I all seem to be fine to me. Any ideas?

Have you checked the fire on each cylinder?

Yes I'm getting fire on all cylinders

Any one else have any ideas? Ran the boat a bit today. RPMs look good on top end but not quite getting normal speed either

Could be the low pressure fuel pump diaphragm http://tse1.mm.bing.net/th?&id=OIP.M...amp;p=0&r=0

Check the reeds.

Bad injector?

Dropped it off at the shop yesterday. Should know something Monday. Hopefully nothing major