P0304 Cylinder 4 Misfire: Symptoms and Fixes for the Ford F-150 EcoBoost
A P0304 code on the Ford F-150 EcoBoost indicates a confirmed misfire in cylinder 4, and on the 2.7L EcoBoost specifically this code has a well-documented platform-specific cause: water or coolant intrusion into cylinder 4 from a head gasket failure pattern that Ford addressed in technical service bulletins, while on the 3.5L EcoBoost cylinder 4 […]