PD46A Carbs float vents

[Johnny4428]

Can anyone on this forum tell me the spec for the vent hole for the float chamber on the left side of carb body. I had a carb cleaning wire that I was using to clear the hole, but unfortunately you know how things have a habit of becoming a stranger to the script? yes I snapped the wire inside the small passage. aaaaaaaaagh. But then I thought I was none worse off because it was blocked before! Except this is undoubtedly going to be more fifficult to clear, Any thoughts?  I take it these passages are quite important to the proper running and prevent a vacum or pressure forming in the chamber. Any help advice would be appreciated.

[Ashdowner]

As always you have to try the easy solutions first. Is the wire magnetic to see if it will pull out with a magnet. If not then the only way to do it I would suggest is to take the carbs off, and the bowl of the offending carb. The vent comes into the side of a little tubular depression in the top of the carb body. If you are lucky that piece of wire will be sticking far enough into the tube for you to grab it with a pair of very thin tweezers. If it's broken off and not sticking out then push another piece of wire into the hole to push it into the tube and ditto.

[Johnny4428]

Thanks, I have tried to push in further but quite tight. The carbs are all stripped down already this was how I discovered the blockage, incidentally three of the four carbs have blocked vents, don't really know if this was effecting the running of the bike as it never ran well for years, probably just too much sitting around with old fuel. If I can't push the wire in I did wonder about carefully cutting away part of the nipple to reveal enough of the wire that I can pull out (last resort possibly) I tried compressed air but not a lot of joy there either. I did wonder about a gentle heat with heat gun, wondered if that would loosen the wire to then blow out. I will post any progress.

[deltarider]

Could you post a pic of what you believe are the air vents?

[Johnny4428]

Trying to upload pics but haven't figured out how to do it off iPad. All photos taken with iPhone or iPad forum site tells me they are wrong file type, tried converting to different file type still no luck. Don't have half a day spare to fire up old laptop but will keep trying.

[Johnwebley]

Trying to upload pics but haven't figured out how to do it off iPad. All photos taken with iPhone or iPad forum site tells me they are wrong file type, tried converting to different file type still no luck. Don't have half a day spare to fire up old laptop but will keep trying.

 try the TAPATALK app,might make it easier,

[Johnny4428]

Had a thought this morning about something I seen which involved the removal of a bearing from a casing using water pressure, simple hydraulics I guess. Looked at the underside of the carb casing or the top of float chamber and thankfully the recess where the stuck wire was is a lovely round hole, had a look around the workshop and found a bit of rod which just fitted, a little engine oil in the hole and using the rod then like a punch and hey presto, just a small tap and out came the wire like a tiny bullet from a gun. Couldn't believe how well it worked. All four carbs now air vents cleared. One happy chappy.

[Johnny4428]

Had a thought this morning about something I seen which involved the removal of a bearing from a casing using water pressure, simple hydraulics I guess. Looked at the underside of the carb casing or the top of float chamber and thankfully the recess where the stuck wire was is a lovely round hole, had a look around the workshop and found a bit of rod which just fitted, a little engine oil in the hole and using the rod then like a punch and hey presto, just a small tap and out came the wire like a tiny bullet from a gun. Couldn't believe how well it worked. All four carbs now air vents cleared. One happy chappy.

Here's photos of carb float vents.



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