Carbon Buildup on Intake Valves for Audi, Volkswagen, BMW and Mini

Posted on August 20, 2015 by Autohaus in Auto Repair

Carbon buildup on intake valves for Audi, Volkswagen, BMW and Mini Carbon may be the building block of life, but it can wreak havoc on your engine. Audi, Volkswagen, BMW and Mini engines utilize direct injection of fuel into the cylinder. Direct injection is where the fuel is sprayed at a very high pressure, directly […]