how do you check if an injector stays open

[yoshi_tony]

just how the title says how do you check if an injector stays open? the reason im asking is because my spark plug gets wet with gas on cylinder 1, 2,and 3 (injectors aren't leaking)

 

[ilco187]

i don't know how most of other people do it but i pull them all out and just blow with my mouth through them if i cant blow through it its closed if i can then its stuck open, that's just how i do it.