hey yam dude

Did u ever own 99wr400,i live in gladstone & havin prob with bike fouling plugs(dry & black)any jetting tips would be greatly appreciated.Yz timed, airbox removed,dyno-mach exhaust & 450 exhaust cam. thanks!

No, i never had a 99 400... what have you done to the bike as far as accelerator pump and jetting mods...? you may find you need to lean the bike out a bit... I think it is the BK mod that applies to (( models as well? I suggest you do a search or have a browse through the archives... for the WR... might shed some light on the issue and possible fix...

Post some symptoms here and we will work it out... does it bog down?, does it splutter?, have you changed any jets...?

Cheers,

David

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