I have a 06 mercury 25 that I can't figure out. When I got it the grey fuel line made a mess of the fuel system. All line and tank are new. New filters. New injectors. Vapor separator is cleaned out. 45 psi of fuel. New idle air control valve. New intake air sensor. New water pump and thermostat.
The motor runs good cold and on top end. Once it has been running hard and you try to idle the motor surges up and down. Then it stalls. If you try to get it in gear it will also stall. Once you restart the motor you can get it into gear quick to move along.
I am really stumped on this one. I have seen these motors beat on by the rental company on our lake with no problems like this. My motor is like new with low hours.
I would appreciate anybody giving me some guidance that has had one do this.
The motor runs good cold and on top end. Once it has been running hard and you try to idle the motor surges up and down. Then it stalls. If you try to get it in gear it will also stall. Once you restart the motor you can get it into gear quick to move along.
I am really stumped on this one. I have seen these motors beat on by the rental company on our lake with no problems like this. My motor is like new with low hours.
I would appreciate anybody giving me some guidance that has had one do this.