2007- 9.9 stalling

C

clarkgris

Recruit
Joined
Sep 6, 2012
Messages
4
I am having a stalling problem. The motor runs smooth for 5-10 minutes and then does a slow stall. Also occurs at higher speeds . I have replaced the fuel tank and contents , new primer bulb and hose, spark plugs , had the carb cleaned at the local service shop, cleaned all grounds, and it continues to stall. Compression is at 125 and 130 respectively. any ideas where to look now??
 
oldcatamount

oldcatamount

Lieutenant Commander
Joined
Apr 4, 2010
Messages
1,740
Re: 2007- 9.9 stalling

I was going to suggest the problem was from a fuel tank vent not working but since you have a new tank, that's not as likely the cause. The fuel pump itself may be dying. Disconnect the fuel line at the carb and crank it over watching for fuel to squirt out. Go over all fuel related connections looking for loose carb bolts, loose fuel line connections, cracks in fuel line etc. Another thought is the impeller is going bad (or the thermostat) allowing the motor to overheat which will shut it down slowly like you described.
 
C

clarkgris

Recruit
Joined
Sep 6, 2012
Messages
4
Re: 2007- 9.9 stalling

oldcatamount said:
I was going to suggest the problem was from a fuel tank vent not working but since you have a new tank, that's not as likely the cause. The fuel pump itself may be dying. Disconnect the fuel line at the carb and crank it over watching for fuel to squirt out. Go over all fuel related connections looking for loose carb bolts, loose fuel line connections, cracks in fuel line etc. Another thought is the impeller is going bad (or the thermostat) allowing the motor to overheat which will shut it down slowly like you described.
Click to expand...

well, the jury has reached a verdict! It appears that the air/mixture adjustment on the carbeurator was improper, and coupled with a linkage adjustment , the motor has responded well ! the motor is running well under load (in tank , in gear, high speed seems good.) Thanx to the admiral for his support. PS, added a new water pump for safe keeping, cheers all.
 
You must log in or register to reply here.
Top