250x timing question

[riderssb250x]

Hey guys i posted a thread the other day about my 250x rnunning bad tehn dying and now wont start people are telling me its the timing well does anyone know what the quad does before it jumsp timing like how it runs , casue mine sounded like a 2 strooke haha to me it sounds like the valves were opening and closing at the wrong time making it run bad casue the timings off? let me know what you think or if youve had this problem thanks

[beaubs]

whats your plug look like?
What you compression?
Did you pull you rocker cover off yet?

Do you have an old spake plug?
you can bore the center out with a drill, add a brass fitting attach a hose, screw it into you plug holeset it at TDC and blow, if you can blow through through the hose you got problems