Why Does My Motor Die?????

[tyeefisher]

My 70hp Merc. starts fine. Motor idles fine, but when I engage into foward or reverse it dies. Only way to prevent dieing is a hard shift or constant restart. When it is in gear it runs great. Only the transition from idle into foward & reverse. Any insight would be SO helpfull.

 

[dcm3372]

Re: Why Does My Motor Die?????

Have you adjusted the idle speed? I've had a couple of manuals for different engines and they all told me to adjust the idle while in forward gear (in water obviously!).<br /><br />If the idle speed is too low it might cause this problem.

 

[rickdb1boat]

Re: Why Does My Motor Die?????

Could also be a lean condition at low speed. Try adjusting the low speed mixture screws out 1/8 of a turn at a time and see if that helps. You may also have a clogged low speed circuit which would require a carb rebuild to repair.