volvo penta AQ131D idle issue

rdengil1

Seaman
Joined
Apr 27, 2009
Messages
52
I had some issues with this boat after ingesting water through a faulty gas tank. I replaced the tank, fuel filter, fuel pump, and rebuilt the carb, cleaned out the intake manifold, and replaced all plugs, cap, rotor. Had some trouble getting it to start, needing multiple throttle pumps and finally it came to life. The issue is that it now will idle for about 6 seconds at about 900rpms then it will jump to about 11-1200 for about 10 seconds, then drops back to 900. It does this constantly. Any ideas?
 

no704

Petty Officer 2nd Class
Joined
Apr 22, 2009
Messages
199
Re: volvo penta AQ131D idle issue

Sounds like a vaccum leak, try spraying some starting fluid around the intake. if you hit a leak it will idle up.
 

PiratePast40

Lieutenant Commander
Joined
Mar 21, 2009
Messages
1,734
Re: volvo penta AQ131D idle issue

Sounds like a vaccum leak, try spraying some starting fluid around the intake. if you hit a leak it will idle up.

I agree with the posibility of a vacuum leak but would really recommend carb cleaner instead of ether. Less posibility of a really cool fireball but probably safer in the long run :D.
 
Top