Automotive Direct Injection Engines: Why Carbon Buildup Happens (And How To Prevent It) USATimes247 June 30, 2025 Fuel injection offers drivers increased efficiency and power. But there’s a common problem, too: carbon buildup on the engine’s intake valves. Â Continue Reading Previous: 11 Chinese Cars That Would Dominate Even After A 100% TariffNext: Got a Galaxy phone? Samsung says you should turn on these security features now! Related Stories Automotive Car insurance write-off categories explained: what are Cat N and Cat S cars? USATimes247 June 30, 2025 Automotive Auto Express New Car Awards: all the previous winners USATimes247 June 30, 2025 Automotive Volkswagen leasing deals 2025 USATimes247 June 30, 2025