When you removes the oil pump line to the carb did you leave the inlet on the carb open?
if ou did you gave yourself a big air leak and that would explain the 4K idle
32:1 is the right pre-mix and you should have used it when servicing and bleeding the oil-injection system
For a leakdown tester go over to blasterforum.com and searce there the engien in the blaster 200 quad is related to yours
webmonstro screwed with this post 09-13-2012 at 09:58 AM