Fishing Mike
New member
I have a 2010 Mercury 25hp 4 stroke that I have been having problems with. At full throttle it runs fine for about 2 miles then it loses power while the throttle is at full speed. After a minute of idling, it regains power for about a half of mile. If I prime the motor while it is idling, it regains power for a short period of time. I've replaced the fuel line and connector. Does anyone know what the problem is? Any help is greatly appreciated.