The engine starts but has problem with idle then not start any more

[BoboCano95]

Hi, I am new with boat.
I just bought a Jet Boat Sea Ray 1995 F14. I played with it for few hours, around 10 hours, it ran fine without issue.

Then the engine suddenly stopped. I left it for couple days and put the boat into lake again, it ran well for couple hours, then stopped.

Last time, it when I started, it has problem with idle, but still started and run, as long as I don't put it in idle.

It ran about half hour, then now not start any more.

Does anyone know where to look into first?

Thanks so much

 

[alldodge]

Welcome
What motor is in the boat?

 

[BoboCano95]

Welcome
What motor is in the boat?

On the top it says 120HP Mercury Jet on logo

But when I google the serial number, seems 90HP.

It has 4 spark plugs.

Thank for look into it. Any suggestions are welcome.

 

[jbcurt00]

Probably ought to move this topic to Mercury OBs instead of PWC.

 

[Jeff J]

Check fuel pressure and/or try pumping up the primer bulb if it has one. Saw a Mercruiser a while back that did what you described. The fuel pump was in the process of failing.

 

[alldodge]

On the top it says 120HP Mercury Jet on logo

But when I google the serial number, seems 90HP.

It has 4 spark plugs.

Thank for look into it. Any suggestions are welcome.

What is the serial number?