So ultrasonic cleaning seems to be the best method for cleaning fuel injectors. My dad is a jeweller and they have a small ultrasonic tank at work for cleaning jewellery. I talked to one of the technicians at the shop I work at and he said I should be able to clean my injectors in the tank if I put the tips in for a little while, and also replace the small screen filters on the opposite end of the injectors. Obviously I wont be able to flow test them afterwards but whatever, its free. Just wondering what others opinions on this was before I yanked my injectors and gave this a try.