My throttle roll on and roll-off seems to have gotten a bit rougher than before. I understand the later carbs (2003) were not so great (made in spain etc.), but anything else to look for as to why the throttle seems to be more snatchy than before.

Bike stock and nothing changed recently. Throttle cables to be adjusted? Any others ideas?

Thanks folks

Could it be that the throttle cables are sticking?

I read this somewhere and filed it in my archive: "Teflon Bicycle Chain Lube is the best. (local Suzuki moto dealership shop trick)".

Quote from: SK Racing on July 29, 2021, 03:34:25 AM
Could it be that the throttle cables are sticking?

I read this somewhere and filed it in my archive: "Teflon Bicycle Chain Lube is the best. (local Suzuki moto dealership shop trick)".

I've tried it, I actually believe that it originally came with that as the lube as well. However getting it in there is almost impossible all the way through. But really the part of the cable that has lost its lube is the few inches at each end because that's all that's exposed to the atmosphere. The manual picture of a plastic bag with the cable at the bottom and filled up with lube etc etc is not needed and in fact impossible and maybe detrimental. The first 2-3" at each open end is all that matters because that's all where the lube gets exposed to air and washed out..

Cool.
Buddha.

After decades with bicycles I can tell you that tri-flow is the stuff for cables. It's good for lots of other tiny stuff too. Try it in a guitar nut slot, tremolo pivots, your brake lever pivot, you name it.

Snatchy throttle would more likely to me to be a sticking slide or vacuum leak.

Quote from: herennow on July 29, 2021, 02:53:39 AM
My throttle roll on and roll-off seems to have gotten a bit rougher than before. I understand the later carbs (2003) were not so great (made in spain etc.), but anything else to look for as to why the throttle seems to be more snatchy than before.

Bike stock and nothing changed recently. Throttle cables to be adjusted? Any others ideas?

Thanks folks

A chain that is too loose can make the throttle seem snatchy at times.

2nd for loose chain, its going to create drive line lash.

Also could be time to change the cush drive rubbers if they have never been done. All GS500s are old enough that the rubber could be getting brittle, even if there hasn't been enough miles on the bike to cause wear.

Check by removing your rear wheel. Lay the wheel down on the brake disc and try picking it straight up off the ground using the sprocket hub as your only point of contact. If the sprocket pops off instead of the wheel lifting then you need to replace cush drive rubbers.

Thanks for the input folks. I'll check it out, although I doubt it's mechanical, chain and sprockets are quite new and cush drive rubbers where renewed along with the wheel bearings when I rebuilt the bike from the ground up 6 or 7 years ago.
I'm going to see if putting the choke on makes it a bit better. From what I read snatchyness can be linked to leanness , along the lines of what Josh said.

vacuum leak would cause the slide to not come up as quickly as it should, not really lean mixture. So I mean, yeah it's lean, but "snatches" because the slide suddenly comes up and it gets enough fuel, because either the slide sticks in the bore or the vacuum can't pull it up until it gets to a certain level. So, like leaking diaphragm, those little vacuum caps (if you have them...), leak at the petcock, intake boot o-rings, etc.

Just spitballing. Carbs are tricky.