[BR3W CITY]

With all due respect, I would not boil an injector, nor would I re-use the seals.

Injector o-rings are cheap and should be replaced anytime you are changing injectors, rebuilding injectors, or cleaning injectors. Its like $8/set.

I also prefer not to completely submerge the electrical portion of the injector. You can fill a small tray or pan with seafoam/cleaner/whatever and set the injectors into it, with the plug pointing up. You can do it with some safety wire or a coathanger. Soak them like that; if you want to go further, you can rig up a small power source to pulse the injectors, getting the solution into the nozzle from the inside and using the injectors own action to clean itself.

Basically its a 9v battery and injector pigtail, with one leg on one post, the other hanging loose. Touch the second leg to the post breifly to trigger (1 second, don't hold current on it).