Mariner 6hp 2 stroke problem.

[IrishSIB]

I recently bought a 1998 ish mariner 6HP. Its on the back of a 240 quicksilver airdeck. It starts no problem first pull with the choke and idles no bother. At lower revs it will plough along nicely but when I open up the throttle to near full revs it starts to die. I was able to plane for about 10 seconds, Ive heard the petrol may not being getting through, or dirty carbs but admitedly i dont know much about outboards, any help would be appreciated.

 

[Lubosleftboot]

Re: Mariner 6hp 2 stroke problem.

Hi

Does the primer bulb stay firm or does it go soft...if it loses pressure it would indicate a fuel pump problem

LLB

 

[sutor623]

Re: Mariner 6hp 2 stroke problem.

Yeah I second that. Try and pump the fuel bulb as the motor is hitting higher rpms. If it runs better while priming the bulb then you more than likely have a fuel pump issue. Other chance is a clogged high speed jet. Or you could eliminate the guess work and get a fuel pump and carb rebuild kit.

 

[IrishSIB]

Re: Mariner 6hp 2 stroke problem.

It seems to be pretty solid yeah, and ive tried to continually pump it while im trying to hit the higher revs but it still dies out. I had it running wide open throttle for about 10 seconds but it then died and the engine would cut out unless i reduced the amount of throttle i was giving it. Also if it died I would have to start it again using the choke.

 

[sutor623]

Re: Mariner 6hp 2 stroke problem.

Yeah well then no doubt in my mind, you have an obstruction in your high speed jet. Pull the carb, break it down, soak it, and order a new carb kit. Should be around $20. While you are at it you can add an extra $10-$15 and get a fuel pump rebuild kit also.