fuel injector cleaners...

["checksix3" <jetjock11@xxxx>]

Not tried the 3M product but Berrymans or a straight shot of 
Chevron's Techroline (at most auto stores) works well. I'd burn 
Chevron after that as it has the stuff already in it.

An old aviation trick is to use Hoppes # 9 gun solvent, especially 
when heated and used ultrasonically. It cleans injectors better than 
than anything else I've used.

How do you know they're dirty? Have you checked the spray pattern?
It's fairly easy to build a home brew injector cleaner, powered by 
hand pump (ala Bosch's expensive unit) or compressed air if you have 
it available.