Evinrude E28ESLCEA outboard starts and runs great when cold yet after running a short time at full throttle and returning to trolling speed or neutral. Then engine bogs down and sputters when trying to accelerate to plane. New gas and priming bulb remains hard. Tried two different gas tanks both with new gas from the beginning with the same result. Cleaned gas screen and there was some debris to remove yet not much. Let the engine cool a bit and it is fine until returning back to trolling speed or neutral. Water coming out of the "[censored]" even at idle looks consistent.