Engine Overview and Common Failures
The weight of the VK56VD engine according to the catalog is 225 kg. The engine number VK56VD is located between the cylinder heads. Scratches in the cylinders. The most well-known problem with this engine is the formation of scratches in the cylinders, leading to increased oil consumption and the appearance of a characteristic diesel sound during engine operation. The cause is the suction of crumbs from a deteriorating catalyst or wear products from the fuel injection pump lifter, as well as distortion of the sleeves due to engine overheating. Even in the American market, a recall campaign was conducted to replace these engines. Timing chain stretching. Many owners have experienced timing chain stretching with mileage of less than 100,000 km, and in some markets, a recall campaign took place for their replacement even after the warranty period. Failure of the fuel injection pump. Due to the use of low-quality fuel in the engine, the fuel injection pump lifter wears out quickly, and its wear products are spread throughout the engine's oil system and can enter the cylinders. Engine overheating. It is necessary to carefully monitor the condition of the cooling system of your engine, as it is prone to overheating, which can lead to distortion of the sleeves and the formation of scratches in them. Other problems. At mileages above 200-250 thousand km, this engine often experiences injector seat failures, as well as malfunctions in the Variable Valve Event and Lift (VVEL) system.