Carb balance question

[MrRiden]

Beemer,
No you are not wrong but..Yes! That is one of three differing methods I have come across. There seems to be some confusion as to how this is carried out [see my post of 8/24 12:14:56] I have tuned some Britt bikes that way [tune with one cylinder dead] but if I am reading correctly from the AirHeads site tuning is done with both jugs running and grounding is for comparison only. I have a long weekend here and I'll be in the "lab" exploring the differing procedures I've come across. Report to follow.
rich
Aside to Semper Gumby [that handle makes me grin] I don't have access to the color tune kit tho I'm curious. I've seen 'em called garbage and great! I'll be lookin' for a kit to try out.

[Ed Miller]

I thought you grounded one plug while adjusting the other side carb say for 850rpm,then did the same on the other till both were at 850rpm,am i wrong here?

That's pretty much what Mriden is doing, but he's doing it faster; the shorting method is slick.  Also, once you have both sides individually idling at 850, when you have both going the idle will be faster and have to be turned down.

I've gotten so lazy that I just adjust it by ear now.  It's not like my bikes spend much time sitting around idling.  If they don't die at a stop light I'm happy.  I am picky about the just off idle cable adjustment thought, but I do that by ear too.

[beemer]

Beemer,
No you are not wrong but..Yes! That is one of three differing methods I have come across. There seems to be some confusion as to how this is carried out [see my post of 8/24 12:14:56] I have tuned some Britt bikes that way [tune with one cylinder dead] but if I am reading correctly from the AirHeads site tuning is done with both jugs running and grounding is for comparison only. I have a long weekend here and I'll be in the "lab" exploring the differing procedures I've come across. Report to follow.
rich
Aside to Semper Gumby [that handle makes me grin] I don't have access to the color tune kit tho I'm curious. I've seen 'em called garbage and great! I'll be lookin' for a kit to try out.

Let us know how it goes after your tests,as far as the colortune,i have one,but in the bright daylight it's useless IMO,if your in a dark garage i guess it should be fine.

[MrRiden]

the grounding method combined with the $5 manometer has worked well  I seem to have uncovered a malfunction with the left carb. when I adjust the mixture on that side for best [highest] idle That side will run [with the other grounded] at 1K even with the Idle speed screw backed all the way off. The right side will tune well by setting the mixture for highest idle and then adjusting the idle down with the idle stop screw. somthin' isn't right with this left carb. I'm thinking that there is some sort of air leak / hung butterfly...or what else I'm not sure. Could a bad needle or jet cause this? There just seems to be no adjustment downwards with the idle stop. I can bring it down with the mixture screw bu it runs rough.
rich