This 2010 Tiguan came in for a misfire fault. It was determined that the fuel injectors were leaking which necessitates intake manifold removal. This was combined with a carbon cleaning procedure which uses a walnut abrasive blaster to remove carbon buildup from the intake valves, restoring the engine’s original level of performance. The carbon is first scraped by hand to remove the larges deposits, then blasted with crushed walnut shells resulting in a much cleaner intake valve.
