Scion FR-S engine knocking noise after valve springs replacement recall, engine failed with unresolved issues on Scion FR-S

Some Scion FR-S owners report experiencing engine knocking noises and subsequent engine failures following the valve spring replacement recall. Despite a 2019 recall and a class-action lawsuit, issues with valve springs continue to affect over 400,000 Subaru BRZ and Scion FR-S vehicles equipped with the Subaru 2.0-liter boxer engine. Owners have expressed concerns about serious engine problems post-repair, including sudden power loss, knocking sounds, and complete engine failure. The fracturing of valve springs, which are crucial engine components, can result in abnormal noises, engine malfunctions, and even stalling while driving, posing significant safety risks. It is recommended that owners experiencing these symptoms consult with a qualified technician or their dealership to effectively address these concerns.