1998 Volvo/OMC - When shifting to forward, the motor stalls. It runs fine on muffs.

[Lou C]

Those hoses can be tough to get off, I use picks made to remove radiator hoses & silicone spray. Slide the lower hose down the Y pipe….With the everything in place you won’t be able to feel the flapper pin it’s behind the lower hose you see in my pic above…

 

[cyclops222]

Is the idle speed too low ? Is it set too lean ? A little bit of both conditions ?