2007 3.0 rough start in neutral

tduncan924

Recruit
Joined
Jul 27, 2020
Messages
1
My 2007 Mercruiser 3.0 will only start with throttle slightly advanced, once i put the throttle lever in neutral the motor spits/sputters then dies. After it runs for about 5 min with the throttle slightly advanced i am then able to bring the throttle back to neutral and it idles perfect. Once i returned to the dock i shut off the motor, then started up again about 5 or so minutes later and same scenario occurred. Boat runs great other wise with no hesitation or bogging down. I recently bought this boat so i have ordered a new fuel filter for starters and will soon do a full tune up. Hoping for some advice to fix this start up issue.
 

dubs283

Vice Admiral
Joined
Jul 27, 2005
Messages
5,343
sounds like the carb is leaking fuel/flooding when the engine is shut down, a sign of needing to rebuild the carb

that along with a full tune up should solve the problem
 
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