I have a 1997 Johnson V4 115HP. Started having some problems this season. Engine usually starts fine and idles fine. Usually works great out of the hole when hitting the throttle. Sometimes it stalls out of the hole when hitting the throttle as if it is not getting gas. Always starts right up again. May be fine out of the hole then or may stall again. Runs great at any speed if it does not stall out of the hole. I have checked the fuel line and it is OK. I have replaced the fuel filter inside the engine and replaced the water seperator filter in the fuel line. Do you think that I have water in my gas tank that is causing this problem? If it is water in the gas tank, what can I put in the gas to dry it up without hurting the engine?
Then someone on this site said they thought it sounded like a Power Pack. Mine did everything you discribed plus it would mysteriously cut out at 4500 RPMs or so on occassion. Always would restart. As they say in the business; "it's either gas or electrical."