I have a '99 xr100 that i wanna sell, but latlely its been smoking like hell, ecpescialy when it is fisrt started. im hoping its nothin major, it does not smoke when on idle, and runs about the same as it usualy does. it's just white smoke coming out of the exaust. my plugs seem to foul easily. why should i do to diagnose this? i wanna know as much as i can before i rip the damn thing apart. whats the average going price for a '99 xr100? its in decent condiotion, and im probly gonna re-do the plastic on it with armstrong floor ploish or plactis renew or something. i appreciate any help you have for me. ihillig@yahoo.com