Matt3213

Member
Jun 6, 2016
1
0
Hi guys, new to all of this .. I have brought a Ktm 250 sx 2002 I believe ?!?! Anyway I've had some issues about piston and cylinder about scores down the barrel just want abit of advice ?!?! Cheers
 

Rich Rohrich

Moderator / BioHazard
LIFETIME SPONSOR
Jul 27, 1999
22,838
16,902
Chicago
Hi Matt - Is there a question hiding in there?
 

jaguar

~SPONSOR~
Jul 29, 2000
1,502
82
South America
If the "scores" are light colored then it may be streaks of aluminum indicating a near-seize. You can clean those streaks off with sandpaper. If the scores are gouges then you may have some compression loss which would reduce engine power. Those gouges happen from ingesting muddy water or just by the air filter not having been maintenanced for a long time and it having let small dirt particles get by.
 
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