When your diesel engine overheats, it is more than an inconvenience; it is also a warning sign of possible damage. Below, we discuss the most common reasons your diesel engine is overheating and how to prevent them. When you need diesel engine repair in Greenbrier or Springfield, Arkansas, give Custom T Repair a call.

Clogged Radiator

Over time, debris, dirt, and other pollutants can accumulate inside the radiator, obstructing coolant flow and impeding the cooling process. When the radiator becomes clogged, heat exchange efficiency reduces, resulting in higher engine temperatures. Regular maintenance, such as draining the radiator and looking for blockages, can help prevent this problem. The radiator can also be kept clean by maintaining optimum coolant levels and using high-quality coolants.

Malfunctioning Thermostat

To maintain appropriate operating temperatures, the thermostat regulates the flow of coolant through the engine, opening, and closing as needed. When the thermostat fails, it might become jammed closed, preventing coolant from properly circulating and causing overheating. It may also become jammed open, forcing the engine to run hotter than necessary, resulting in poor fuel efficiency. Regularly examining and replacing the thermostat as part of routine maintenance can help prevent this problem. 

Engine Coolant Leak

Engine coolant controls engine temperature and prevents overheating. However, leaks can develop because of damaged hoses, gaskets, or radiator components, allowing coolant to escape and lowering system efficiency. When coolant levels drop, the engine is no longer effectively cooled, resulting in higher temperatures and possibly overheating. Engine damage can be prevented by regularly inspecting for signs of coolant leaks, such as puddles under the car or low coolant levels in the reservoir.

Damaged Radiator Hose

The radiator hoses move coolant from the radiator to the engine. Radiator hoses can decay, crack, or leak after being exposed to heat, pressure, and impurities over an extended period. When a radiator hose is damaged, coolant can leak out, which causes lower coolant levels and decreased cooling system function. As a result, the engine may overheat and damage critical components. Check the radiator hoses for signs of wear, such as cracks, bulges, or soft patches.

Diesel Engine Repair in Greenbrier

With more than 40 years of hands-on experience and access to modern diagnostic equipment, there is no diesel engine problem the team at Custom T Repair can’t solve. Our diesel engine mechanics can perform any service necessary to ensure your truck continues to run strong. This includes everything from fixing hard starting issues, replacing faulty glow plugs, and installing new gaskets and seals to complete diesel engine rebuilding. If your truck suffers from power loss, increased exhaust smoke, no start or hard start issues, decreased fuel economy, or other issues, don’t hesitate to call us at (501) 208-4730 for diesel engine diagnostics. We’d be happy to provide a quote for the cost of semi truck engine repair in Greenbrier, AR.