200xcw: Poor idle at high altitude. Do I need smaller or bigger Pilot Jet?

I got poor idle at high altitude. Do I need a bigger or smaller Pilot Jet??? Bike runs great otherwise. It's a Rekluse fitted bike so I need to raise the idle. It's always fine at home 1.5K elev. but when I take it above 5K elevation i have to turn the idle screw all the way in just to get it barely to idle

current settings (factory recommended for elevation and temp):

air screw: 2 out

PJ: 40

needle: NOZI

clip: 2 from top

MJ: 155

Carb: Keihin PKW 36S AG

thanks for any input

Marty

does it get better if you open the air screw?

No, it makes little difference

^^^ I rechecked it, I seem to get "best" idle at 1.5 out. That's with the idle screw all the way in

bump...

when you open it past 1.5 turns does the idle go up?

when you open it past 1.5 turns does the idle go up?

no, it's pretty much the same

what about if you turn it in?

the idle will become unsteady and it will die

Any suggestion on pilot jet? Up or down?

had a compession gauge in it lately?

the air screw suggest the pilot jet is correct.

you lose compression at altitude.

will check compression. bike runs good but it does have close to 100 hours on top end

compression good. Went down to 38 on pilot. Took it to 8k elevation. Problem solved.

should have been able to open the air screw past 1.5 turns and achieve the same thing.

should have been able to open the air screw past 1.5 turns and achieve the same thing.

I agree. that's why this whole thing is so perplexing. Anyway, I'm happy now:ride:

Thanks for your input Eddie!

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