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My '04 5.9 (late '04, lift pump conversion) has 4 injectors running anywhere from 93-97%, and the other 2 were 103 and 108%. Do I need to replace all six? Or any at all? And if so, does anybody know a good place? I got quoted 3100$ parts and labor, but problem is the place that did my valves recommended this other place, and it's real funny how I never had these problems until after my valve job... my truck only has 194k kms, should I even be worried about injectors running 93%? My fuel mileage is still 22mpg on the highway, and about 12-13 in town with the trailer...