82 GS650 Carb Problems

[Anonymous]

Hi all, I've got an 82' GS650EX. It had been sitting for 5 years when I got it so I pulled the carbs off and replaced all the o-rings, cleaned the jets, and installed new float bowl gaskets and needle and seats. When I run fuel into the carbs it fills the bowls up and runs out the back of all four carbs.

I've rebuilt many carbs before, but never had this problem. I reinstalled the old needle and seats with the same result. The floats were set at 23 mm without the gasket (what my clymer manual says) and I even tried lowering them as far as I could - didn't change anything.

The needle and seats I got are aftermarket - K&L I think. I've heard of getting bad 'new' parts before, but I find it hard to believe all four would be bad.

At this point I'm ready to find another set of carbs. Anybody have any suggestions?

Thanks,

Mike

[Anonymous]

I didn't find anything pertaining to my problem searching past messages, but I saw several different posts about the vent lines.

I replaced the fuel line as well when I rebuilt the carbs and the vent lines are tee'd into the fuel line. I thought this was a bit odd, but I assumed it was correct. After looking at the clymer manual closely, it shows the vent line separate from the fuel line.

Maybe this is the route of my problem?

[earlfor]

Vent line ares ALL open to atomsphere. The fuel line is a solid/uninterrupted line between the petcock and the fuel nipple located between carbs 2 and 3. The petcock vacuum line is a solid line between the vacuum fitting on the petcock and usually the vacuum fitting on 3 carb (located on the upper left/inboard side of the 3 carb) Or, on some models the petcock vacuum fitting is on the right upper side of the 2 carb.


The way you describe your setup now is such that the bowls would continue to fill through the venting even though the float needles shut off fuel flow. :-)

Earl

I didn't find anything pertaining to my problem searching past messages, but I saw several different posts about the vent lines.

I replaced the fuel line as well when I rebuilt the carbs and the vent lines are tee'd into the fuel line. I thought this was a bit odd, but I assumed it was correct. After looking at the clymer manual closely, it shows the vent line separate from the fuel line.

Maybe this is the route of my problem?

[Anonymous]

I don't know why it was setup that way. It didn't make sense to me either, but it looked factory and that's why I was confused. There's no telling what the previous owner did. I've already found some strange and "jerry-rigged" things.

I went back out and disconnected the vent lines and it solved my problem.

Thanks for the response.


Mike