Engine Overview and Common Failures
The weight of the D4FB engine according to the catalog is 155.8 kg. The engine number D4FB is located at the junction of the engine and the gearbox. In the first generation diesel engines, the turbocharger did not last long and was sometimes replaced at 30,000 km. In the second-generation units, defective glow plugs were installed in the first year. The fuel system. The Bosch fuel system is reliable, but the fuel pressure regulator often fails. Sometimes the return pipes on the injectors burst or the booster pump fails. Intake contamination. In this engine, the manifold with swirl flaps quickly becomes clogged with carbon deposits. It needs to be cleaned at least once every 50 thousand km, preferably together with the EGR valve. Timing chains. The timing drive does not have a high resource, as it consists of two roller chains that can stretch and start making a loud noise already at a mileage of 120 - 150 thousand km. Other drawbacks. The boost pressure sensor regularly fails, its wiring simply breaks, and the crankshaft position sensor fails, which often benefits from a simple cleaning.