Having a problem cold starting my 2007 250x. It turns like a washing machine but will not start. I was only able to get it started is to pull #3 plug and spraying Starting fluid into the cylinder then it starts and runs well. It will start when warm but the next day it will not start again. The local kawi dealer had the ski for 2 weeks and claims he could not find anything wrong but admits it wont start cold ???? He lubed all connections and changed out some electric components but could not find the problem.

Any idea's ???