I just purchased a boat with t
I just purchased a boat with twin Bf 150s. When you put the engines in the foward or idle detent position the idle becomes noisey and rough. Acoording to the tach it is idling around 800 rpm in gear and 1000in neutral. If you move the throttle ever so slightly it clears up and is completely smooth. This occurs mostly on the port engine but intermittently on the starboard engine. These engines have 300 hrs each. I have replced the racor filters and wandering if the small filters on the engines might be part of the problem. Engines run very strong above the idle transition and idle very smoothly in neutral. It seems that when you drop them in gear the idle is too low. Any ideas?
Thanks
I just purchased a boat with twin Bf 150s. When you put the engines in the foward or idle detent position the idle becomes noisey and rough. Acoording to the tach it is idling around 800 rpm in gear and 1000in neutral. If you move the throttle ever so slightly it clears up and is completely smooth. This occurs mostly on the port engine but intermittently on the starboard engine. These engines have 300 hrs each. I have replced the racor filters and wandering if the small filters on the engines might be part of the problem. Engines run very strong above the idle transition and idle very smoothly in neutral. It seems that when you drop them in gear the idle is too low. Any ideas?
Thanks