90' Mariner 40hp - Starts but no Power

[mvenanzi]

My 40hp dingy engine started fine and will continue to run in Neutral on high RPM. It will not idle or run while in gear. The engine ran like a top at the end of last season. This problem occurred during initial season start-up. Is it bad fuel? Choke? or something else?

 

[jze1212]

Re: 90' Mariner 40hp - Starts but no Power

Is the vent open on the tank? Does it have an inline fuel filter that could be clogged?

 

[rickdb1boat]

Re: 90' Mariner 40hp - Starts but no Power

If you did not use fuel stabilizer during layup, I would suspect a fuel problem and/or clogged carbs. Try hitting the choke/primer and see if the motor picks up. Also try pumping the bulb and see if that makes a change...Do not run the motor in neutral at high RPM's unless you can afford a new one....