Makes you wonder about the condition of the other couple check valves that are right by the cylinder head/intake mani huh??? Its sort of rediculous for the one on top of the airbox to get that bad.

 

yeah i was digging around some old forum archives last night and they said that one goes first.... but no one know why

i dont understand why it got so bad either, given that the one closest to the engine looks fine

 

just gotthe icm(finally) and replaced it instant improvement

thanks for all your help guys, i appriciated it