What are the reasons for insufficient power in the National VI Wuling Rongguang New Truck?
3 Answers
Possible reasons for insufficient power in the National VI Wuling New Truck include engine fuel system issues, intake system problems, and poor spark plug ignition. Engine fuel system issues: Clogged fuel injectors, fuel pipe leaks, reduced fuel pump power, and blocked fuel filters can all lead to insufficient vehicle power. Intake system problems: In addition to fuel, the engine also requires air. If components such as the air filter or throttle valve are clogged, resulting in insufficient air intake, it can also cause the vehicle to accelerate weakly and slowly. Poor spark plug ignition: This may lead to issues with weak acceleration.
My Wuling Rongguang Xinka is a China VI version, and I recently encountered a problem with lack of power, which was quite annoying. It might be due to a clogged air filter—dust buildup affects the engine's air intake efficiency, and diesel engines are particularly sensitive to this. I took it apart myself and saw it was indeed covered in black grime; cleaning it helped a lot. Another common factor is blockage in the fuel system—low fuel pump pressure or a dirty fuel filter can lead to poor fuel supply. The China VI emission system, like the DPF, tends to accumulate particulate matter and clog, restricting power output. Also, if the clutch is worn, revving the engine higher might actually make it harder to climb hills, so it’s worth checking and replacing parts if needed. I recommend regular maintenance, like changing the oil and filters on schedule, and avoiding slamming the accelerator at startup to reduce engine strain. If problems persist, it’s safer to visit a professional repair shop and use a diagnostic tool to check for trouble codes.
Having worked on this type of vehicle for many years, the insufficient power in the National VI Wuling Rongguang New Card is mostly due to emission after-treatment issues, such as DPF carbon buildup or failed regeneration clogging the exhaust system. It could also be faulty sensors like the mass airflow sensor sending incorrect data to the ECU, forcing power reduction; dirty fuel injectors or unstable fuel injection pressure are also key causes, with poor fuel quality exacerbating the problem. A stuck EGR valve interfering with exhaust gas recirculation similarly hampers engine response. Don’t overlook clutch or transmission slippage reducing drivetrain efficiency. I recommend first using an OBD scanner to check real-time data, then try replacing the air or fuel filter yourself. If that doesn’t work, sending it to a 4S shop for DPF and fuel injection system cleaning is more reliable.
