How routine fuel induction service restores power and efficiency
If your Gasoline Direct-Injection (GDI) engine is not responding like it used to, that could be due to carbon deposits in the system valve. GDI engines typically deliver better efficiency and power than their port fuel-injection counterparts, but require clean components to work at optimum levels. Carbon buildup on the intake valves keeps them open longer, allowing more contaminants to enter the system. That can quietly eat away at performance, so preventative cleaning via fuel induction service is recommended every 15,000 miles or so.
One option to restore power and get better MPG is BG Platinum Fuel System Service. At AAPEX 2025 in November, Chris McElroy, a technical service representative for BG Products, explained to Fleet Maintenance how the BG Platinum Service combats the perils of letting carbon build up on valves and in the chamber.
"You're losing power, you're losing performance," he said, explaining that the carbon buildup is essentially causing a turbulence problem. Instead of a smooth air path over the valve, the deposits restrict normal airflow, reducing the efficiency and quality of combustion.
The process introduces 44K Fuel System Cleaner into the GDI system with a tool that can hang from the hood's underside. The proprietary liquid removes the carbon build up on the back of the valves as well as the combustion chamber piston top, ultimately restoring efficiency and performance.
BG also offers the Rev-It Throttle Actuator tool that attaches to the wheel and pedal, using shop air to automatically cycle the engine every 45 seconds to ensure proper flow across all the cylinders without requiring constant technician input. From a shop perspective, this allows the service to run alongside other maintenance work, keeping technicians free to perform other jobs at the same time.
Usually recommended about every 15,000 miles, McElroy noted that any untreated GDI engine will develop carbon by design. Long-term issues often include irregular engine performance and reduced fuel economy, but even vehicles without noticeable complaints typically show immediate improvement after the service.
"It's human nature [to not] notice minute losses over time, but we notice that big change when it gets restored," he added. "[After getting the valve-cleaning service] you notice that throttle response is there. You notice that power restoration is there. It's like, 'Whoa, wait a minute. Why is this a new car again?'"
Platform-specific digital instructions are also available on the site to ensure that the process is completed accurately for the vehicle being serviced.
ACDelco and Motorcraft from General Motors and Ford, respectively, now recognize the service and include it in their owner's manuals as recommended maintenance.
About the Author
Lucas Roberto
Lucas Roberto is an Associate Editor for Fleet Maintenance magazine. He has written and produced multimedia content over the past few years and is a newcomer to the commercial vehicle industry. He holds a bachelor's in media production and a master's in communication from High Point University in North Carolina.