KX Riders

Maintenance & Technical => KX250 / KX125 => Topic started by: motorman on February 16, 2007, 02:54:37 PM

Title: 2005 kx250
Post by: motorman on February 16, 2007, 02:54:37 PM

I am working on a friend of mine's bike and it is a 2005 kx250. He took the motor out of the frame to paint the frame. He reinstalled motor and crossed the gray and green plugs. Any ideas as to what keeps it from firing? Does the plugs color code together or are they supposed to be crossed over? I have no service manuals on bike because it is not mine. Thanks for any suggestions

Title: Re: 2005 kx250
Post by: BrokenSpoke on February 19, 2007, 03:33:02 PM

Where do the gray and green plugs originate from and where did he plug them in?

Title: Re: 2005 kx250
Post by: KDXGarage on March 01, 2007, 04:00:42 AM

Where are these wires?  I just bought one a week ago, and I will take a look at mine.

Title: Re: 2005 kx250
Post by: motorman on March 05, 2007, 01:26:19 PM

he crossed them up green to gray.  they both will hook to each other but diffrent wires. one goes in the top of carb. and the other one ill have to check tomorrow and post it i just hope he didnt blow the cdi box. i found out todayafer he pluged them up he kicked on it trying to get it to fire for about an hour. so now im thinking that the cdi is gone out  thanks for all  your help

Title: Re: 2005 kx250
Post by: motorman on March 05, 2007, 02:35:28 PM

i think now its not the cdi box but the voltage regulator what do you all think. i have no way testing it i dont have a shop manual show the spec. any one know them

Title: Re: 2005 kx250
Post by: KXcam22 on March 06, 2007, 04:04:50 AM

The thing on the top of the carb is most likely the TPS (throttle position sensor).  It sounds like you might have hooked up the 2 wires from the crank sensor wrongly.  Hopefully it has not damaged anything.   You bike does not have a voltage regulator - voltage from the magnetor goes straight to the coil.  Sorry not a KX250 expert so can't advise much further. Cam.

Title: Re: 2005 kx250
Post by: motorman on March 06, 2007, 07:00:22 AM

on the kawasaki web page on the parts list shows a voltage reg. but no specs. my local show want tell me anything. they keep telling me to bring it in so they can fix it but im not doing that they charge 79.00 an hour.

Title: Re: 2005 kx250
Post by: hughes on March 06, 2007, 07:22:32 AM

I didn't see the voltage regulator listed for a 2005 kx250. A voltage regulator is not a ignition componet. Elec. componet used for charging systems, or even some lighting kits require a regulator. Some voltage regulators are also rectifiers which allows them to change AC current to DC currecnt.

I think at this point your friend needs to order a service manual. Until then I would stop guessing at the wire connects, you can possibly damage some of the componets.

Title: Re: 2005 kx250
Post by: KXcam22 on March 06, 2007, 10:21:57 AM

Good call Hughes! Cam.

Title: Re: 2005 kx250
Post by: KDXGarage on March 06, 2007, 10:59:33 AM

If your friend does not want to work on his own bike, would he at least consider buying the service manual so you can work on it properly??

Title: Re: 2005 kx250
Post by: motorman on March 06, 2007, 01:33:07 PM

i got tired of guessing and order one to day

Title: Re: 2005 kx250
Post by: KDXGarage on March 11, 2007, 09:47:00 PM

Good job!  Good luck with it.

Title: Re: 2005 kx250
Post by: The Flyin Hawaiian on March 11, 2007, 11:15:15 PM

There is a voltage regulator for the powerjet carb.

Title: Re: 2005 kx250
Post by: motorman on May 04, 2007, 01:13:04 PM

Just an update  it was the cdi box on the front of the bike had a short in it got one off ebay and bike runs great thanks for all the help