Jetting 02 xc250

[02gg250]

I have an 02 gasgas xc 250, when I Ride in the woods I'm fowl in plugs every couple hours but in an open field I wont, what should my jetting be, clip, etc. it's from 750 to 1000 feet for elevation

 

[Jakobi]

What makes you think its a jetting issue?

an 02 is now 14 years old.. When did she last get a piston/rings? How are the main seals? Reeds? When was the spark plug last replaced? What jetting is in the bike now? How does it actually run? What have you tried to resolve the issues so far?

 

[02gg250]

Brand new piston and rings, don't know about the main seal, reeds are in decent shape, don't know the jetting now, brand new spark plug, bike runs great when a new plug is put in, just tried putting a br9es instead of br8es to burn hotter

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[hadfield4wd]

Here is my jetting. Fresh motor. New reeds. 1999 EC 250

1000ft to 3000ft

178 MJ
35 PJ
N1EC needle middle position
#7 slide

 

[Zman]

The NGK 9 plug is cooler than the NGK 8.

 

[02gg250]

The NGK 9 plug is cooler than the NGK 8.

I realized that today, mechanic told me new air filter so I'm gonna try that then go to 7 plug if not, take it to him to rejet

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