When warm idols at 2K

If it consistently shuts down when it warms up you are probably losing ignition. It sounds like you have a weak ignition coil. There is two or three different adjustments you can make to the carb. Idol speed, low speed mixture screw(pilot) and high speed mixture screw(main jet) If you can get a good vid of the carb I can direct you

Hi randal book..
Before you remove or try to adjust your low and high speed jets you should always count the number of turns it takes to lightly seat the idle mixture screw and high speed needle adjusting screws.
Be sure to write the number of turns down on a piece of paper so you will know how many turns from the seated position to open the jets when you go to reinstall them, or if you remove them for cleaning or replacement.
If you have aready tried to adjust them then the adjustments below should get it running for you for final adjustment when warm.
Normally you will adjust your idle jet to 1/2-3/4 turn open from the bottom seated position.
Then you will re-adjust the low speed of the engine when the engine is warm by turning the idle screw in or out till the engine runs smoothly at idle speed, around 1200 RPM.
The high speed jet is adjusted to 1 1/2- 1 3/4 open from the bottom seated position, after the engine is warm.
Then re-adjusted by turning the High Speed jet adjustment screw in or out till the motor runs smoothly at high speed.
Alway use the "lightly seated" method if you have not changed the screw settings.
Please take time to rate me
Bud

OK, there should be a warmed up idle adjustment on this bike on the carbs under the tank (like my 1985 Honda Interceptor). Maybe it's set too high. On my bike the screw has a knob on it for easy adjustment.

On the Kawasaki motorcycles I'm ot sure if they had this feature.
But, if they don't, then a screwdriver should be enough to turn the idle adjustment screw.

Also, check for kinked cables for the throttle.

Happy biking!

No you are confusing the idle screw (a thumb-screw) with the air/mixture screws, these are turned inwards (clockwise) until they lightly seat & then back out the specified amount
You should have the bike tuned by a professional who should include synchronising the carbs, this will let the engine run more smoothly, idle at lower revs ,increase speed & all-round performance speed

Ride safe
Bike-Doc
Please mark this as very helpful (if it has been!!)

The problem is in the idle air control motor. It is mounted on the throttle body with two bolts, you can pull it off and make sure it is not caked with carbon also check where it mounts on the throttle body and make sure it is not caked with carbon.

How old is it? Some newer models have a set idle and can't be adjusted

either the tps is out of parameters or you need to adjust the idle up a bit

Hello, here is a thread I found on this site with from what it looks like, the same problem(with an added solution) that you have. http://www.fixya.com/cars/t1576683-1999_cougar_diagnostic_code_p0430_p0420

if it is a v12, and at idle when warm if it goes up and down then you need to rebalance the throttles, they are off balance causing the idle to raise and drop.
set the butteryflys behind the air cleaners to 2 thousands of an inch using a fella guage and make sure the linkage arms from the pedestal in the middle of the engine are set the same (one is not longer than the other)
JPTCAT

the idle screw can be located by following the throttle cable to the carby body, you will find a quarter wheel which the cable hooks into at the bottom you'll see adjustment screw, this will adjust your idle speed.