Maintenance & Technical > KX250 / KX125

She's Alive !

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TaKeN:
I will get a compression tester :)


Its a 1992 btw..

don46:
I would look at jetting, I'm sure you didn't hurt it. The warmer the temp the richer the bike runs.

TaKeN:
Whilst we are on the subject :)


When i checked the bore ( Cylinder )


On the bike, there were markings on the inside of the cylinder about 1/2 an inch wide going down the bore


There were probably about 8 or 6 of these marks all around the 360 degrees of the cylinder where the piston or rings have started to grow ( I assume )  Is this normal ?


The markings are spaced equally all around the inside of the bore. They weren't deep gouges.. just a different colour to the rest of the bore.

blackkx:
  is the bike running hott ? can you touch the cylinder and rad cap when the power failure occurs . but you definatley need to check the compression . 

TaKeN:
Just did a compression test with the throttle wide open,


and i got 105 PSI, this is with the engine stone cold,


Is this good or bad ??


Blackkx - Well, the cylinder and rad are quite warm, not scolding hot but hot enough to make you remove your hand after a few seconds :)

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