TBarCYa
Senior Chief Petty Officer
- Joined
- Apr 13, 2005
- Messages
- 781
Last week I rebuilt the carburetor due to it leaking fuel from the bowl vents and now the engine won't run. I have the mechanical fuel pump connected to an auxilliary fuel tank with fresh gas and the rebuilt seems to have gone well except that the documentation called for 2 turns out on the idle mix screws and they were set 4 turns out when I started working on it.
If I give it throttle while cranking, it sprays fuel and will continue to run as long as I keep the throttle open and I can see the fuel spraying from the primary jets but as soon as I close the throttle it dies. I tried adjusting the idle screw to open the primary throttle plate but not as much as I had it open when it would run. I tried messing with the timing which I believe is CLOSE but I know it not set exactly. I set the idle mix screws everywhere from 2-turns out (per the spec sheet) to 4-turns out (as it was when I started) and there is no change.
There are 4 jets in the float bowls (2 per side) and I believe that I put them back in the same holes they came out of, but would the symptom indicate that I have them backwards? That's the only place where I believe I may have gone wrong during the rebuild.
Any other ideas for getting it to idle? Go wild and crank the idle speed screw until it runs then set the timing? Pull the carb back apart and make sure the idle orifices (below the blades) are extra clean? I was able to spray carb cleaner thru them after leaving the carb in a bucket of dip for a couple days.Swap the jets in the bowls around?
Thanks.
If I give it throttle while cranking, it sprays fuel and will continue to run as long as I keep the throttle open and I can see the fuel spraying from the primary jets but as soon as I close the throttle it dies. I tried adjusting the idle screw to open the primary throttle plate but not as much as I had it open when it would run. I tried messing with the timing which I believe is CLOSE but I know it not set exactly. I set the idle mix screws everywhere from 2-turns out (per the spec sheet) to 4-turns out (as it was when I started) and there is no change.
There are 4 jets in the float bowls (2 per side) and I believe that I put them back in the same holes they came out of, but would the symptom indicate that I have them backwards? That's the only place where I believe I may have gone wrong during the rebuild.
Any other ideas for getting it to idle? Go wild and crank the idle speed screw until it runs then set the timing? Pull the carb back apart and make sure the idle orifices (below the blades) are extra clean? I was able to spray carb cleaner thru them after leaving the carb in a bucket of dip for a couple days.Swap the jets in the bowls around?
Thanks.
