1998 150hp 2cyc efi dies when warm

[Mhemry]

I have been having this issue for a few years now. The motor starts and runs great when it is cold. Once I run a few miles the motor dies at idle. In order to get it to start I have to quickly put it in gear. If the motor cools off I can start it and idle no peoblem. Any help is appreciated. Thanks.

 

[Faztbullet]

Check the MAP sensor hose......lil hose from ECU to manifold fitting. They can fill with fuel and cause issues.

 

[Mhemry]

I pulled the hose off the manifold and it looks like it has some moisture on the inside. Should I just replace the hose?

 

[Faztbullet]

Not replaceable as it goes inside ECU...