View Full Version : Idle
06-12-2003, 09:59 PM
I had a post last week that I can't seem to find? Anyway I was having a problem with my idle speed, when I started the bike it would idle fine, but when it warmed it would run at 2100-2200. So I tried the idle adjust on the side of the tank and that didn't work,it would only turn the idle up. So I removed my air box and was going to take the screw out that is above the idle adjust and the throttle mechanism on the side of the T/B's wasn't even touching that screw. What do I have to adjust so that the whole throttle mechanism closes enough so that it at least touches the screw that sets the idle at 1500 rpm's or what ever the factory setting is. I really want to take the screw out so I can just use the adjust knob to control the idle from no rpm's to where ever.
06-12-2003, 10:07 PM
I'm not real clear on where your looking, but could the fast idle control be holding this from falling back to zero? If this could be it, you can take some tension out of the wire at the adjustment.
06-12-2003, 10:19 PM
no my fast idle is fine, I made sure to check those first along with my throttle cables. I might possibly have to much slack in my throttle cable.
06-12-2003, 11:57 PM
Too much slack in your throttle cable would actually be of benefit for a proper idle adjustment.....not a problem. With any excess throttle cable slack, you are totally assured that you are not hanging up on the throttle cable.....and are truly stopped on one of the THREE idle adjustment mechanisms (too many redundant idle mechanisms).
The first is you fast idle CABLE on your left bar. If this is too tight, or you have some lever action feed in, you will be raising your idle excessively.
Second is the "permanent' idle stop screw. This can be seen easiest when the bottom airbox pan is removed. This is the redundant idle screw Ken at Evo recommends that you remove (which I did). This can be set too high, so no matter how low you set your right side MANUAL idle stop......or your bar located "Fast Idle" cable, the permanent idle stop screw will over ride the other two.
Once the permanent idle stop screw and nut are removed, you can then set you manual idle adjustment to as low as 0 RPM.....and the bar located fast idle "low setting" will only be as low as your manual idle setting.......8o 8o 8o
06-13-2003, 07:03 AM
I had some trouble getting my 2100-2200 RPM idle back down after installing the 54mm TBs. My throttle cables which had previously been adjusted for zero slop were now applying a bias. Slight cable adjustments got my idle back down to 1500RPM.
06-13-2003, 09:19 AM
<blockquote><strong><em>Quote:</em></strong><hr> I had a post last week that I can't seem to find? Anyway I was having a problem with my idle speed, when I started the bike it would idle fine, but when it warmed it would run at 2100-2200. So I tried the idle adjust on the side of the tank and that didn't work,it would only turn the idle up. So I removed my air box and was going to take the screw out that is above the idle adjust and the throttle mechanism on the side of the T/B's wasn't even touching that screw. What do I have to adjust so that the whole throttle mechanism closes enough so that it at least touches the screw that sets the idle at 1500 rpm's or what ever the factory setting is. I really want to take the screw out so I can just use the adjust knob to control the idle from no rpm's to where ever.
What you need to do is reset your throttle bodies so the bike idles properly. This is a Falco site, but the procedure is the same for your Mille. www.geocities.com/sl_mille/ (http://www.geocities.com/sl_mille/)
Set your idle mixture and then synch the cylinders... It'll run like a champ.
06-13-2003, 09:31 AM
The picture that comes up when I go to the site you suggest then click on idle mixture, this is a perfect picture to describe my problem. When looking at the picture, my whole throttle mechanism isn't touching either of these screws.
06-13-2003, 11:00 AM
You are absolutely correct: Those screws don't connect to your throttles at all. What they do is control the mixture at idle, when the butterflys are closed. In short: If your idle mixtures are off, which is VERY likely since you've installed reworked T/Bs, then the bike will *never* idle properly, no matter what you do to the throttle and cables. Think if these screws as the idle needle in a carb (not the external screw). If you install a big, fat, idle jet, the bike will idle high, and playing with your cables wil have no effect. So, EFI systems have externally adjustable idle jets!!! Beats the hell out of pulling apart a set of carbs!! Cool, huh!!! :cool:
So, basically, what you have been doing up to now is kind of like adding more pressure to your tires to firm up the ride, instead of reaching for the compression adjuster, like you should have done in the first place...
*Yes,* of course they both matter. But there's a time for one, and there's a time for the other!
What needs to happen is for you to zero your throttle position sensor, then adjust your throttle cables and idle adjuster for the proper/desired amount of slack. At this point, you are done playing with them so leave them alone.
Once that's finished, you would then reset the air bleed screws on your throttle bodies so the bike idles appropriately. I like mine just a hair high (1600), since the bike downshifts more smoothly.
That accomplished, you can then hook up your vacuum tester and verify that the cylinders are pulling within spec. As the site points out, the motor runs smoother with the front cylinder pulling a slightly stronger vacuum.
Sorry if I seem to be beating up on you a some, but you seemed to be stuck on the wrong thing...
06-13-2003, 11:31 AM
Ken Zeller is taking my fast idle thing out completely. I do not know if it is because of the ignition amp, but my bike idles around 2000 all the time.
06-13-2003, 12:17 PM
My bike won't start if it sits overnight without the fast idle. Weird.
Bill in OKC
06-13-2003, 06:03 PM
I had the fast idle problem on my 00.5 Mille and balancing the throttle bodies did the trick.
06-14-2003, 09:56 AM
My TPS was off again, so i readjusted it and the idle seems to fine again
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