|
|
Post by caduceus on Sept 10, 2020 16:16:05 GMT -5
I just got a 2009 Bronc Colt. Scooter was not running, and the previous owner said he had replaced the carb 2 years ago. I got it to run with ether, but poorly and for just a short while. In cleaning the carb, I tried to squirt fluid through the accelerator pump nozzle, and found out there was no hole in the end of the tube that extends into the air passage.
Anyone ever seen this before? I suppose it needs a hole drilled in it. May try sharpening a paper clip and see if if it will do the job!
|
|
|
|
Post by mikehailwood on Sept 10, 2020 17:24:03 GMT -5
Is the hole on the other side of that tube and you just cannot see it?
|
|
|
|
Post by caduceus on Sept 11, 2020 14:32:35 GMT -5
That is a possibility. Neither of my inspection mirrors will fit behind it, and I tried to use a shiny socket as a mirror, but saw nothing. The screw or jet, whatever it is, does not want to budge, and will very likely break if I really force it.
Do you know if it is one long piece that protrudes into the bore? Or is it two separate parts, the screw and the nozzle?
I did end up drilling a hole in it, but of course it faces the air box, so I'll just see what happens when I try to run the engine!
|
|
|
|
Post by GrumpyUnk on Sept 12, 2020 9:02:51 GMT -5
I thought I posted on this somewhere... Did you try pressing down on the pump shaft. It extends vertically from the rearward side of the carb up to where a lever on the throttle control will push on it when the throttle is opened from idle. You SHOULD be able to push down on it, perhaps using a flat blade screwdriver to prevent poking a hole in your finger. It won't move very far, but should pump fuel up to the nozzle, and squirt it into the venturi when depressed
I think drilling a hole in the brass 'nozzle' may have a ruinous effect. No more 'squirt gun' action as the combo of two holes will just allow a blob rather than spray. Possibly. Or not. Ima notta Keihin engineer. Or carb engineer of any sort.
Work the throttle by hand and watch the lever pivot as the throttle opens. The other end should move immediately to push down on the accelerator pump shaft, and cause a squirt. If not, check the pump diaphragm, blockage in the outlet from the pump, AND blockage in the tiny inlet in the bowl that allows fuel into the pump chamber.
tom
|
|
