05 WR450 surging issue
Posted August 10, 2010 - 01:21 PM
Posted August 11, 2010 - 12:03 AM
Posted August 30, 2010 - 10:24 PM
Posted August 31, 2010 - 06:42 AM
Based on lowering the needle a position leads me to think the needle jet emulsion tube is worn. This causes the bike to be richer and you lowering the needle, leaned things somewhat. I suspect if you very carefully inspect the tube, you'll find the hole is slightly oval.