jcb512
07-07-2017, 12:27 AM
Boat: 2006 Outback (base model)
Engine: Indmar Assault 310 Carb
Prop: original. very slight curl to two fins, this is new
Problem: not getting to top speed. Was consistently getting 42mph and even got that this year until after I did some messing around and now only get 38/39 mph.
Situation/background:Had carb rebuilt when winterized last Fall, this Spring she ran well except the idle was at 450rpm's so wouldn't idle especially when cold, a little better when warm but often would stall when going from idle to in gear like when tightening up the rope for a skier. I thought messing with the throttle setting would help so I unclipped the link from the ball and played with threading until I thought the idle was better. Well I realize now that was the wrong thing to do, so adjusted the idle screw to get it set for the 750rpm's at idle. However, now when I run it at WOT it is 3-5 mph short of what it was. I took it out and it got to about 4,050 rpm's but as mentioned only 38mph. I tried adjusting the throttle connection to get it back to what it was and got a mile or two per hour more but not back to normal. The engine seems to run smooth in my opinion, perhaps a little rich as I smell gas in the exhaust but bought that was normal. It even idles nice, don't use the top speed much, just want it to run right and make sure nothing is wrong or going wrong.
Any thoughts would be very much appreciated.
Thanks in advance.
Engine: Indmar Assault 310 Carb
Prop: original. very slight curl to two fins, this is new
Problem: not getting to top speed. Was consistently getting 42mph and even got that this year until after I did some messing around and now only get 38/39 mph.
Situation/background:Had carb rebuilt when winterized last Fall, this Spring she ran well except the idle was at 450rpm's so wouldn't idle especially when cold, a little better when warm but often would stall when going from idle to in gear like when tightening up the rope for a skier. I thought messing with the throttle setting would help so I unclipped the link from the ball and played with threading until I thought the idle was better. Well I realize now that was the wrong thing to do, so adjusted the idle screw to get it set for the 750rpm's at idle. However, now when I run it at WOT it is 3-5 mph short of what it was. I took it out and it got to about 4,050 rpm's but as mentioned only 38mph. I tried adjusting the throttle connection to get it back to what it was and got a mile or two per hour more but not back to normal. The engine seems to run smooth in my opinion, perhaps a little rich as I smell gas in the exhaust but bought that was normal. It even idles nice, don't use the top speed much, just want it to run right and make sure nothing is wrong or going wrong.
Any thoughts would be very much appreciated.
Thanks in advance.