catalyst-519
Seaman
- Joined
- Mar 12, 2008
- Messages
- 64
Hey Guys:
Having a carburation prob with my 1976 9.9 Evinrude. It's been modded with a 15hp Carb. Pulled it apart (clean as a whistle)and it looked like it had a kit in the last couple years so I sprayed it out again and put it back together. Problem is that there is no lower end and it stalls at low idle. Also at medium idle it will run but then sometimes rev up really high without touching the throttle. I've had it in at the mechanics and they say they have set the low idle as good as they can get it. They claim that the low compression 100/100 is the source of the problem as the motor does not have enough compression to draw sufficient fuel into the cyls, but I don't fully believe this as I have other motors that will run well with 90/90.
The only thing I may have done wrong is when removing the float valve seat I scored the face of the brass with the screw driver as it was seized in there good. Instead of replacing it I just cleaned it up with some emery. Didn't touch the inside of the seat, only the face. Could this be causing the problem?
Any ideas would be most welcome at this point.
Cheers---519
Having a carburation prob with my 1976 9.9 Evinrude. It's been modded with a 15hp Carb. Pulled it apart (clean as a whistle)and it looked like it had a kit in the last couple years so I sprayed it out again and put it back together. Problem is that there is no lower end and it stalls at low idle. Also at medium idle it will run but then sometimes rev up really high without touching the throttle. I've had it in at the mechanics and they say they have set the low idle as good as they can get it. They claim that the low compression 100/100 is the source of the problem as the motor does not have enough compression to draw sufficient fuel into the cyls, but I don't fully believe this as I have other motors that will run well with 90/90.
The only thing I may have done wrong is when removing the float valve seat I scored the face of the brass with the screw driver as it was seized in there good. Instead of replacing it I just cleaned it up with some emery. Didn't touch the inside of the seat, only the face. Could this be causing the problem?
Any ideas would be most welcome at this point.
Cheers---519