Audi Case Studies, Blog, Car Repair and Servicing, Case Studies Audi Case Study 47: A4 Manifold replacement Posted on December 1, 2021December 1, 2021 by admin 01 Dec Mr. Li Wei rants that his Audi A4 vibrates during driving. Having already clocked 120,833km, our specialist detected a faulty Manifold. Mr. Li Wei arrives our Garage complaining that his Audi A4 vibrates while driving. An original Audi Manifold was quickly delivered to our workshop for the job. The job commence with dismantling the faulty Manifold. The Manifold is carefully dismantled. Exposing the Engine head without the Manifold. The problematic old Manifold (foreground) makes way for the new. The new Manifold is professionally installed. A standard complimentary car wash with interior cleaning is our gesture thanking every customer for the patronage. A Good Turnout Of Cars Queuing For A Zetough Paint Protection Service! It’s a full crowd Wednesday at our Toh Guan branch!