[no compression 99 yz400f]

it has a lver bit i look at the the little spring on the motor (dont no whats its called) it seem ok ill just take it into the shop

[no compression 99 yz400f]

iv only done what iv been told to try im putting it into the shop as im not very good with bike mechanically just no the basics

[no compression 99 yz400f]

its normally have good compression were i have to actually kick now i can just sit down and kick wich is wierd i normally start 3-4th kick but now it dosnt have any sign of starting. ive tried some start ya bastard did sound like it was about to but still didnt start

[no compression 99 yz400f]

it has i bit of compression i put it in gear and stalled it as the kill switch dont

[no compression 99 yz400f]

Hi

i have had my bike for around 3wks iv been starting it fine after a few leg braking kick the compression was really hard to kick but i manage to start it road it every weekend since i bought it no problems i started it two days ago to warm it up to check the oil etc. I went to start it Saturday no compression iv changed the spark plug (has spark) new air filter what could be wrong? rings, jets etc