This Mercedes Engine Was WHISPERING… Until We Opened It Up (Piston & Liner GONE)

In this video, we tear down a Mercedes truck engine with a severely worn piston and cylinder liner (commonly called the "mug" or sleeve). Watch the full diagnosis, disassembly, parts inspection, and step-by-step replacement process. We show you the exact wear patterns, measurement techniques, and torque specs to get this diesel beast running like new again. Whether you're a professional heavy-duty mechanic or a DIY truck owner, this rebuild guide is packed with pro tips you won't want to miss. Hit subscribe for more engine repair content