Idle Speed after Running - too high

[tom203]

I'm far from a purist on this subject, so I think you could skip the colourtune. The idea here is to get a decent idle/mixture setting on #3 carb- which is the "master" carb (others are adjusted to it ). Another link to peruse....

http://members.dslextreme.com/users/bikecliff/images/highest_rpm_plug_chop.html

[Doug650L]

Thanks - I'll check that out.

[MisterCinders]

Definitely replace the intake o-rings and make sure the boots are solid. You also should not skip the vacuum synch, as noted already.

If, however, you do those things and still run into this problem, don't sweat it too much. I have stayed current on all the GSR maintenance, and encounter the same thing. I can warm the bike up for ages in the garage, but find the idle too high very soon after running it under load. After correcting it at the first stoplight or so, she runs fine all day. Let her sit overnight, and she wants a higher idle setting to start, even under full choke.

Rinse, repeat.

A lot of this relates to tuning the pilot, but ultimately, my bike likes to warm up under load.

Keep doing plug chops in the pilot circuit to make sure your AFR is good. My plugs are pretty damn close (tan in color, etc.), though I continue to tweak them here and there. If the warm engine "resets" the idle higher, make sure it's pegged there instead of hanging. If your garage idle is 1,100, but your "street idle" is 2,500, make sure that's a firm 2,500. If it wanders around, then you may have air leaks instead of just cold blood.

HTH

[koolaid_kid]

Thanks Tom for the link (I had not seen it before) and Dodik for the explanation. Aticipating a question as I read the instruction: Step 3 of the link says "adjust cylinder 3 to best idle". Is the Colourtune the device that he used to figure that out? What if I don't get one - how do I know best idle?

No, you want a carbtune, not a colortune.