Quick question, I have 3 malfunctioning injectors, when pulse signal is applied and have air pressure on inlet, no air is let out at all. The one working injector has ticking noise and spark when I first apply signal, other 3 don't make any noise at all, but there is still a spark. Can dirt/gunk stop the solenoid moving altogether? Or are these injectors most likely dead?
if so take them to someone who cleans injectors in their workshop. wont cost very much. and they'll let you know if they are stuffed and they will also give them back clean and ready to go.