Tuning Question

OK. I finally insured, registered, and titled the bike. Today I wanted to take it out for a drive. Here are some things I'm seeing that bothers me.

1. Cold starts are extremely hard. After a few times of cranking, it may catch and start running. However, it seems to only run on half the cylinders. And if I would gently blip the throttle, it will immediately die. After a short time, it will eventually start running as I think it should. At least it has a steady idle after it warms up.

2. After the motor has completely warmed up, off idle acceleration seems to be missing below 2500 rpms. I cannot just twist the throttle back and go. It seems like it's bogging down really bad.

3. Albeit the first two issues, this bike really runs well on cruise and heavy acceleration above 3000 rpms.


Do these issue sound like either my pilot jet or my idle fuel requires adjustment? I'm not sure how these motors run if they are lean or really rich in these areas. I don't have a color-tune yet. And any help is greatly appreciated.


P.S. Does anyone that lives near the greater Las Vegas area have a color-tune kit I could borrow?

 

If you have poor acceleration under 3000 rpms, you are running rich. Turn the idle screws IN and you should feel an improvement.

But the real tune-up will be done with a colortune.

 

He said that "Cold starts are extremely hard" so it's not too rich. It should be easier to start if rich unless it's WAY too rich but then the plugs would foul.
Probably has clogged starting jets and/or bad spark plug wires and caps and maybe a bad coil.
Carbs would certainly need cleaning or cleaning again if cleaned already and electrical and ignition checked out.
I've got colortunes if anyone wants to come to Phoenix to use them.