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Re: 1999 KDX not starting
Posted: 09:22 pm Aug 29 2014
by superman27e
Put new packing in it and still does the same thing. Runs a few mins, wipe plug off, runs again.
Re: 1999 KDX not starting
Posted: 07:46 am Aug 30 2014
by diymirage
what jets are in there ?
Re: 1999 KDX not starting
Posted: 09:35 am Aug 30 2014
by superman27e
I'm not sure. I assume stock jets. How can I tell?
Re: 1999 KDX not starting
Posted: 09:44 am Aug 30 2014
by diymirage
superman27e wrote:I'm not sure. I assume stock jets. How can I tell?
ding*ding*ding
there is your problem
your bike is not properly jetted
even if the inside of the carb is spotless and the jets are flawlessly clean it still wont run right unless they are the right size jets
go through the jetting guide
http://www.kdxrider.net/forums/viewtopi ... 105&t=1156
and see if that doesn't fix your problem
(as far as telling what size the jets are, the pilot jet has a number stamped on the top, the main jet on the side)
stock jetting is pig rich for most any bike could cause the problem you are seeing
Re: 1999 KDX not starting
Posted: 09:48 am Aug 30 2014
by superman27e
I tried that, but it seems when turning the idle and air screw, it didn't make much difference.
Re: 1999 KDX not starting
Posted: 11:29 am Aug 30 2014
by superman27e
I just checked the reed valve and a corner is chipped off one of the corners. Hopefully that's the problem
Re: 1999 KDX not starting
Posted: 06:39 pm Aug 30 2014
by diymirage
superman27e wrote:I tried that, but it seems when turning the idle and air screw, it didn't make much difference.
a properly jetted carb will react to changes to the air screw
the chipped reed will need to be replaced but after that you have to jet your carb
Re: 1999 KDX not starting
Posted: 08:26 pm Aug 30 2014
by superman27e
Do you think the chipped reed valve is causing the problem? There's also 2 other pedals that aren't even touching the reed cage.
Re: 1999 KDX not starting
Posted: 08:40 pm Aug 30 2014
by diymirage
chipped reed will make the bike act like it is running rich but a poorly jetted bike will never run right
so get some new reeds, jet her and ride the wheels off of it
Re: 1999 KDX not starting
Posted: 11:12 pm Aug 30 2014
by superman27e
Words to live by :p