Logo
FULL SITE MENU

1997 yamaha 40 hp hrs proplems

B

bruin.352

New member
I have a 1997 40 hrs outboard it runs great at the start we can run for about 10 minutes great all out power, then it starts slow down and sputter till it shuts off. It will start back up and go for a second and sputter and die. If we let it cool it will run for a while and do the same thing. Any thoughts we have cleaned the fuel lines and replaced the line from the tank to the motor and the ball and cleaned the gas tank. Help please!
 
Re: !997 yamaha 40 hrs proplems

Bring a plug socket with you and run the boat until it dies. As fast has you can, remove the spark plugs and see if they are wet with water. Get back to me with the results.
 
Do you have a temperature alarm? Could be running hot. I would also check for spark when it shuts off. When coils start going bad, they break down when they get hot. When it shuts off, see if the coils feel hot.
 
Back
Top