What are the reasons for frequent overheating in diesel engines?

[MacJuniper]

The reasons for frequent overheating in diesel engines include insufficient coolant, loose or faulty fan belts, and poor radiator performance. Below are detailed explanations and solutions: 1. Insufficient coolant. Solution: Regularly check the coolant level in the radiator and expansion tank, and replenish it promptly if the level is low. A lack of coolant in the diesel engine's cooling system will affect heat dissipation and cause overheating. 2. Loose or faulty fan belt. Solution: Tighten the fan belt or replace it directly. If the cooling fan is faulty, the motor and circuit need to be inspected and repaired. 3. Poor radiator performance. Solution: If the radiator surface is covered with debris, reducing its heat dissipation capacity, it can be cleaned at a 4S shop.