Mercedes om642 engine sound. Injector!?

Аватар автора
Speedy Wheels & Hot Engines
W221,w204, sprinter engine, om642, 350CDI, 90.000km, DPF equipped. On and off noise in the engine compartment, more intense at the back of the engine (~ Cylinder no 3, under the turbo). NO errors on tester, run well, normal fuel consumption, no metalic particle in the oil filter. What would it be the source, please!? Thank you!

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