I have a 90 hp four stroke mercury. While in the slip, I can start the motor and it will run great for about 30 minutes. After about 30 minutes at idle it starts shaking and dies. When I try to restart it it will only run a few seconds before it dies again. If I run at a slow speed for a while it does the same thing. If I run at a fast speed the engine works fine but as soon as I go to a slow speed it dies.
I run only non ethanol gas. I have added sea foam several times but it doesn’t help. No alarm goes off and water is coming out the pee hole just fine.
Any sugestions will be appreciated.
I run only non ethanol gas. I have added sea foam several times but it doesn’t help. No alarm goes off and water is coming out the pee hole just fine.
Any sugestions will be appreciated.