Idle Problems

[SpanishBob]

So my bike backfires through the airbox and randomly idles high. I got a video of what happens posted below. I could use some help on this one. She will idle around 3.5-4k and then goes down when I spray the right side intake boot with starter fluid.

https://youtu.be/lx3UBhvRcSM

[i8ball]

u have a leak on the intake boot so basically you have to replace it and idle speed is us ally easy to fix there is an idle adjuster screw on the bottom of the carbs its dose not take a lot to make that puppy shut your rpm through the roof turn it one way if it goes up go the other way it us ally takes couple seconds to drop rpm.

[i8ball]

ok dont touch the idle nob after checking the video which i should have done frist it is probably just the boot causing you to idle that high cause it remarkably drops to a good sound when you really soak it.

[SpanishBob]

So I need to replace the boot? I made sure my carbs were seated right and the clamp was tight.

[SpanishBob]

I did find these. And they are in florida where I live 

http://www.ebay.com/itm/F-SUZUKI-GS-500-F-2009-OEM-AIR-INTAKE-BOOTS-CARBURETOR-MANIFOLD-/111608564896?hash=item19fc638ca0:g:NRUAAOSwPhdU73rT&vxp=mtr

[lucas]

You can buy them brand new, they are about $29 each from partzilla.com

[i8ball]

personally i would go with new on something like that cause you never know how hard that rubber has gotten or is it might have a leak

[SuzukiOnly]

Those boots will last forever. What's probably worn out are the O-rings that go between them and the head, which was exactly what happened to me. Cheap and easy fix.

[lucas]

You might be using the term forever colloquially, but I have to disagree.  When I bought my bike the boots appeared to be intact but on further inspection were badly separated from the internal metal bits.

But you bring up a good point, pinpoint the source of the leak if possible.  Try to determine whether it is the boot or the oring or the hose clamp or the torque on the bolts or something else.  That is the prudent course of action.  If you're sensitive to the cost of parts you want to do more checking and less blind buying.