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Carb leak - cracked stand pipe?

Posted: Sun Aug 28, 2011 12:07 pm
by ajs350
Just finnished overhauling my 79x carbs and put them on a leak test only to find #6 dripping away. Took the bowl off, filled it with fuel and with the drain screw tight it is dripping. How do I fix what seems like a leak past the brass stand pipe and the bowl casting. A layer of JB weld perhaps?
TIA Ross

Re: Carb leak - cracked stand pipe?

Posted: Sun Aug 28, 2011 12:28 pm
by tevan
solder the standpipe it must be cracked. They are brass. Some guys have replaced them. they sell that size at hobby lobby.

Re: Carb leak - cracked stand pipe?

Posted: Sun Aug 28, 2011 3:25 pm
by ajs350
tevan
Thanks for the solution. I found the crack as you can see from the photo, soldered it up and no more leak! :D
Cheers
Ross
4750

Re: Carb leak - cracked stand pipe?

Posted: Sun Aug 28, 2011 6:31 pm
by tevan
That looks just like the ones I have done. That tube is very thin. Glad you solved your mystery.

Re: Carb leak - cracked stand pipe?

Posted: Tue Sep 06, 2011 6:48 am
by Kool_Biker
Excellent pic, depicts this common problem so well!
Aris