if you look at my other posts regarding injectors you will see, that spray pattern and pop doesnt tell the whole story on injectors, I had two different bosch service centres test injectors in front of me at no cost and injectors tested great, for pop test and spray pattern! put bozio nozzles in myself ,my diesels a 99 E300d cured the noisy idle and quieted her down to off the lot style 7 yrs ago totally impressed !