The reason for the turbo turning red on the Changan CS75PLUS
3 Answers
The reason for the turbo turning red on the Changan CS75PLUS is delayed combustion of the air-fuel mixture in the cylinders. Symptoms of a damaged turbocharger include: 1. Blue or white smoke from the exhaust pipe with reduced power; 2. Increased oil consumption; 3. Unstable turbo pressure; 4. Abnormal noises from the turbocharger and high coolant temperature; 5. Unstable engine speed; 6. Insufficient boost effect. The working principle of an engine turbocharger involves converting the energy from exhaust gases into increased intake pressure. There are impellers in both the exhaust and intake pipes. When the engine operates, exhaust gases cause the exhaust impeller to rotate, which via a shaft makes the intake impeller rotate as well, thereby increasing intake pressure. When the throttle is opened wider, exhaust flow increases, and intake flow increases correspondingly with the exhaust flow.
Seeing the turbo glow red, I've encountered many car enthusiasts who are nervous about this situation. When the turbocharger of the Changan CS75PLUS turns red during operation, it's usually due to excessively high exhaust temperatures. During high-speed driving or climbing steep slopes, the engine is under heavy load, fuel injection increases, and the exhaust heats up quickly, causing the turbo components to glow red. However, this isn't entirely a bad thing—normal materials can withstand temperatures over a thousand degrees, so occasional glowing isn't a problem. But if it happens frequently, you should be cautious—it could indicate insufficient cooling, aged or stagnant engine oil that can't dissipate heat, or a blocked exhaust system trapping heat inside. Sometimes, a dirty air filter restricts airflow, leading to incomplete combustion and faster temperature rise. From my experience in car repair, I recommend avoiding prolonged aggressive throttle use, regularly checking engine oil and coolant levels, and scheduling maintenance at a service center, such as cleaning the exhaust pipes. These practices can prevent long-term high-temperature damage to the turbo and extend the engine's lifespan.
Last time I took my Changan CS75PLUS on a road trip, I got really scared when the turbo suddenly turned red while climbing a mountain road. Later, chatting with friends, I learned that this reddening phenomenon is actually quite common. During prolonged aggressive driving on highways, the exhaust side temperature can rise to 700-800 degrees Celsius, and turbo reddening is a normal reaction—the materials are designed to withstand it. However, if it turns red during normal driving, it might be due to poor maintenance. At the time, I checked the engine oil myself—it was a bit thin, and after changing to new oil, the situation improved. They also reminded me that turbo cooling relies on oil circulation; if the oil passages are dirty or low-quality oil is used, heat dissipation will suffer. Additionally, a clogged air intake pipe can affect it, and cleaning the filter helped a lot. The key is to pay attention to safe driving habits, like avoiding prolonged high-speed operation and letting the engine idle to cool down after parking. Regular maintenance is the real solution.
