Carb Question

[spotsy]

I had two good rides last Monday and Tuesday so I figured the weather had turned cold again so it's finally time to look at my # 3 carb. It would leak gas after a ride one day and the next time it wouldn't. I tried the Seafoam many times and it still seeped out. So off the carbs came. Upon looking at the # 3 needle and seat I do see a ring mark on the needle but it's very hard to see and the light has to be just right. I have ordered new one's from Buckeye but my gut and experience tells me that may not be enough wear to cause the leakage.

 

The question I have, is there any other vent lines or blocked ports that could cause pressure to build in the carb making it seep? Anything else that would cause it? Thanks.

 

Spotsy

[boominup]

How about your float adjustment or a "heavy" float? It doesn't have to be off by much to cause an overflow. Brian

[Marcarl]

If there is a ring in the needle it will depend on exactly how the needle seats each time, if it seats exactly right in the ring everything will be hunkydoory, but should it be off just a wee bit, it will continue to allow fuel through and hence you have an overflow situation.

[spotsy]

The float's on one and three are fine.

 

Marcarl, I'm hoping that's what it is. Time will tell.

 

Thanks to the both of you.

 

Spotsy

[BOO]

I tend to think the new parts will not fix the problem but it's worth a try I suppose.

I don't know how many miles you have on your bike but it takes a real lot to cause problems with the needle grove. The needle fit's pretty tight in the tube so for it to hit the seat at a different angle is pretty unlikely.

I would give the bowl and jet area a very good cleaning and try it again. Also be sure the tube is clean of all varnish and the sides of the needle are clean.

Good Luck,

Jerry

[V7Goose]

I am not sure how you diagnosed the float as being just fine, but if I were you, I'd swap the float with another carb at the same time I did any more work on it. If your problem turns out to be fixed, then it matters little what caused it, but if it still leaks, you will know for certain it is not the float. And if the other carb starts to leak, well ....

Goose

[spotsy]

The float measurements were fine and no gas in the floats. I do plan on swapping the floats when I re-install. I also plan on checking the vent lines and cleaning the carbs.

 

Thanks for all the comments.

 

Spotsy