Maintenance & Technical > KX450F / KX250F

Help! 2004 KX250f almost never starts.

<< < (2/2)

patz:
Don:

I hear ya.  This is my first four stroke MX bike.  The two strokes are so much easier and reliable!  The four strokes ride so sweet though huh?  I go got this bike in a trade, it has a bunch of nice aftermarket stuff (triples, full Ti exhaust, ported head, rekluse, cams, suspension, new wheels and tires, holeshot device, etc) on it and is in really good shape.  It doesn't really owe me anything at this point so i have no problem putting some money into it for a new top end.  What do I want to look for on the valves?

thanks again.

pat

Dutch-K5 Fan:
Try to get the GSX-R 1000 valve springs, They are the same as procircuit, and verry cheap.
Valve's arent expensif and easy to replace.
Had mine cdi broke also, replace it with a HPI 2 curve.
Did you try to set idle a bit higher? Had mine at 3500rpm or more, it started in 2 kicks. Even when hot.


Dutchie

red85:
I'm glad I saw this thread.  I am going through the exact same thing with my 04 KX250F as well.  When you had suggested the GSXR springs were you suggesting them for use with stainless or Ti valves?

Dutch-K5 Fan:
We always used stock piston, valve's and GSX-R springs.
When replacing a piston and valve spring or without. With will give 1 HP more than without.
Don't know how it is now, in 04 only stock piston worked, everything else gave probleme like oil cusumption.

And in Holland stock Suzuki parts were the cheapest to get.

Dutchie

Navigation

[0] Message Index

[*] Previous page