vacuum leak

[handinpants]

I have a 1980 gs550e, now on the #2 carb, there was an open vacuum line, you can even see this in the manual.

my question is, this line was open on my bike, up until yesterday the bike was running very lean and poor, u plugged up the open vac line and bam, the bike is running good now. I was going to clean my carbs, but then i found the vac leak. Does anyone know wherre that vac line on the #2 carb, where that is supposed to connect to, if any otherwise i will seek out nipples

[Counter]

Was it supposed to go to the petcock?

[handinpants]

maybe, anyone else know or can confirm? where this open vac line is supposed to go.

[BassCliff]

Hi,

Yes, the vacuum operated petcock gets it vacuum from the #2 carb. If you no longer have a vacuum petcock then you can just plug that opening. Did you install an aftermarket petcock?


Thank you for your indulgence,

BassCliff