An awesome aspect of German automobiles is that most models utilize a Fuel Stratified Injection (FSI) engine. As suggested in its name, fuel is injected directly into the combustion chamber where it combines with the air entering from the intake manifold. The mixture is compressed and causes a spark that amplifies horsepower. Unfortunately, FSI engine carbon buildup is commonplace. Excess carbon causes restricted airflow and loss of power.
Symptoms of Carbon Buildup
If you notice signs of carbon buildup, then bring your vehicle to an Audi & VW repair center. Typical symptoms include:
- Lack of engine response
- Lag in acceleration
- Lack of response when hitting the gas pedal
- Check engine light frequently flashing on
- Misfiring, which becomes noticeable when the engine revving noise sounds erratic
How to Minimize Carbon Buildup
Unfortunately, FSI engines lack an intake where additives can be sprayed into the system. It’s been speculated that additives are ineffective for FSI engines. Added additives enter the combustion chamber but fail to reach the inlet manifold. Even so, additives formulated for FSI engines are available, though you’ll need to have a VW and Audi service add the fuel into the engine.
Ultimately, the best defense against carbon buildup is to have your car inspected at intervals indicated on the car’s owner manual. An inspection determines whether there’s enough carbon to adversely impact engine performance.
We Address FSI Engine Carbon Buildup
Due to their unique construction, a general mechanic may not have the training to perform a diagnosis on an FSI engine. Read our story to learn about our history and how we remain Seattle’s German car maintenance specialist. Carbon buildup on an FSI engine is a problem we tackle for German vehicle owners. Contact Buttera Motors today for an estimate or send us a message to learn more.
VW and Audi service in Bothell, Bellevue, Kirkland, Kenmore, Redmond & Woodinville