What are the reasons for the lack of acceleration in Sinotruk HOWO?
4 Answers
The reasons for the lack of acceleration in Sinotruk HOWO are as follows: 1. Insufficient fuel pressure. 2. Clogged fuel injectors. 3. The temperature sensed by the engine oil temperature sensor does not match the engine temperature when the vehicle is cold. 4. Faulty signal from the atmospheric pressure sensor. Additional information: 1. Reason: The inability to accelerate and the failure to increase the speed in electronically controlled diesel engines with electronic fuel injection. The specific cause depends on the brand and model of the diesel engine, as different models may have different faults. 2. The task of electronically controlled diesel engines with electronic fuel injection is to electronically control the fuel injection system, achieving real-time control of the fuel injection quantity and timing according to operating conditions.
Having driven for decades, I've encountered the lack of acceleration in HOWO trucks several times, mostly due to fuel system issues like clogged diesel filters or dirty injectors restricting fuel supply. It could also be caused by an old air filter failing to draw sufficient air, leaving the engine gasping. Turbocharger failure is worse – RPM rises but power doesn't deliver, like running with a suffocating mask. Underinflated tires or overloading can also make the vehicle sluggish. Last time I checked, the engine oil hadn't been changed for too long, becoming overly viscous with poor lubrication that dragged the engine down. For a quick test, try flooring the throttle during simple starts – if the response is sluggish, immediately inspect the fuel tank and coolant reservoir before getting stranded or causing accidents mid-journey. Regular fuel system cleaning and filter replacements prevent most issues; delaying repairs leads to costly overhauls and headaches.
With over a decade of car repair experience, common causes of HOWO truck acceleration weakness often stem from engine system malfunctions. For instance, insufficient fuel pump pressure or intake manifold leaks leading to lean air-fuel mixture and poor combustion efficiency. Exhaust system blockages like excessive DPF carbon buildup prevent proper exhaust flow, choking the engine. Electronic control systems may also malfunction—faulty sensors causing the ECU to limit power output. In the drivetrain, worn clutch plates or transmission issues can cause power loss during gear shifts. During inspection, I first listen for abnormal engine sounds; black smoke typically indicates fuel system problems, followed by checking fuel pressure and exhaust backpressure. Neglecting minor issues can lead to skyrocketing fuel consumption and safety risks—it's best to promptly visit a professional shop for a diagnostic scanner code reading and comprehensive solution.
When driving my HOWO truck on long-distance trips, I've experienced a lack of acceleration, which I suspect may be due to poor fuel quality with excessive impurities clogging the fuel lines or injectors. A heavily dust-clogged air filter can restrict airflow, causing the engine to lack oxygen and lose power. An aging battery with unstable voltage may lead to intermittent ignition, or a stuck turbocharger might prevent the RPM from increasing. Remember to check if the engine oil level is sufficient - too little oil results in poor lubrication and accelerated engine wear. In winter, low temperatures can cause diesel fuel to condense, often leading to similar issues. For prevention, I always insist on using standard diesel fuel and clean the air filter monthly to avoid minor issues escalating into major repairs. Sudden loss of power on the highway can be quite dangerous - try pulling over and restarting the engine; if that doesn't work, call for roadside assistance.
