KDX carb setting

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ArkAngel
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KDX carb setting

Post by ArkAngel »

Hi Guys,

I hope that you can help me with some questions that i might have (kdx 250).
I done a top end on my bike, new piston the works. Before it was having some problems starting.
Now it starts in 2 kicks but the low end is bogging (like no power) and the idle was out. So i wanted to do the jetting guide but i noticed that my bike does not have a idle screw (its taken out all together).
My mixture screw was also turned out 3 and 1/2 times screwed out and i know the manual says 1 and 1/2 turns out. i got new air filter and plug in. i also made my fuel 32:1 like the manual says.

But since putting the new idle screw and spring in it is struggling to start and i also tried to put the mixture screw to 1 and 1/2 and 2 screws out but still nothing? , does anyone have some suggestions for me? do you think i must start with a float check? The needle check?

Any help would be awesome. would love to start the bike in a few kicks like everyone else does.. lol

Thanks
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TN Dirtrider
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Re: KDX carb setting

Post by TN Dirtrider »

Would probably be helpful if you could list out what jets are currently in the bike. If you don't know the history of the bike, I would probably plan on replacing all the jets with new ones. A clogged up jet could certainly cause issues.
ArkAngel
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Re: KDX carb setting

Post by ArkAngel »

I dont know what jets are in the bike at the moment. is there anyway i can check?
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TN Dirtrider
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Re: KDX carb setting

Post by TN Dirtrider »

Drain the fuel out of the bowl, remove the carb. Take the float bowl off and you would then have access to take out the jets and see what # they are.
ArkAngel
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Re: KDX carb setting

Post by ArkAngel »

Hi,

Main jet is *160 and pilot jet is *42. Does that help?
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Julien D
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Re: KDX carb setting

Post by Julien D »

155 / 40 would probably be a good starting baseline. If the bike was idling without an idle screw present, something is amiss. You will need to follow the jetting guide. No shortcuts here!
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ArkAngel
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Re: KDX carb setting

Post by ArkAngel »

I placed my orders for the pilot and main screw today.
People have also been speaking about replace the needle and getting a smaller slide?
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ArkAngel
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Joined: 11:50 am Jul 03 2012
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Re: KDX carb setting

Post by ArkAngel »

Hi guys,

ok what i have done is installed a new main and poilot jet, new air filter and my spark plug is only a few hours old. i got the BR9ES spark plug in. I installed my new idle screw and spring.
The bike still will not start.. been kicking it for a while now and no luck. Im also running 32:1 fuel mix. My mixture screw is also 1 and 1/2 turns out. I have also checked that my spark plug is making a spark when i kick.

The funny thing is the bike did start when i installed a new piston, but the idle was out a lot.. so now since i got the idle screw in it does not want to start.. i cant figure it out.. HAHAHA

Any help would be great. I don't know what i am missing?
KDX 200
KDX 250
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