Maintenance & Technical > KX500 Original

KX500 Wont Start!!!!

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cass:
hi guy`s can you give any ideas why my kx 500 90 wont start?  just ran- in ! out last week coughed then died, changed plug fired once then nothing. ive reset floats, checked all wiring with ohm meter within tolerences , mag & stator ok !if you put fuel down the cylinder she still wont start! pull the plug out and its still sparking ! tons off compresion full engine rebuild . surely it sould cough or fart or something? ive never had this problem with a 2 stroke in my 25 year playing with them! not check reeds yet but should still fire with a shot of petrol down the head? fresh fuel in it as well ! woodriff key is perfect and timming bang on! engine has had every seal  & bearing done as well !

martinfan30:
Something has to be off. You only need compression, fuel and fire to light up.

How good is the spark? Fat and blue? Stator may be failing.

tharden:
I would say your timming is off.  Maybe your flywheel had rotated on the crank some how?  If you have the three needs for a engine to run then one of the variables are off.

Friar-Tuck:
 Have you checked to make sure the flywheel key hasn't sheared?
   EDIT!
Sorry, I see you checked the key on the flywheel... :oops:

Will she run if you pull/push start?

 
  There is another post here a fellow had the same set-up whith his 450, after tons of money replacing parts it ended up his flywheel/mag was bad.
  I'll look for the thread...  See below :-D
Tuck\o/

kwakman:
sometimes they pop and bang out the zorst like there gonna go when woodruff key has sheared. check here first, then timing, then fuel and filter.have you just oiled filter? sometimes if not left to dry sufficiently they dont allow air flow, hence not running......... :x

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