Why Can't LNG Natural Gas Vehicles Accelerate Properly?
2 Answers
Here are the reasons why LNG natural gas vehicles cannot accelerate properly: 1. Pressure Gauge Issues: Check if the pressure is normal. If there is a problem with the pressure, inspect all pipelines for gas leaks. 2. Fuel Injector Issues: Inspect the vehicle's fuel injectors. If an LNG natural gas vehicle does not run smoothly, the fuel injectors may accumulate carbon deposits and age rapidly. Below are additional solutions for LNG natural gas vehicles that cannot accelerate properly: 1. Fuel Level: If the fuel in the vehicle's gas tank is critically low, check the dashboard for the remaining fuel level and refuel promptly if it is too low. 2. Fuel Quality: Poor fuel quality, such as gas with low calorific value, can lead to insufficient power and torque, resulting in weak acceleration. Replace it with gas of higher calorific value. 3. Gas and Liquid Outlet Valves: If the gas and liquid outlet valves on the gas tank are not fully opened, the fuel supply may be insufficient, causing weak acceleration. Fully open the valves to resolve the issue. 4. Air Filter and Fuel Injector: Check if the air filter and fuel injector are clogged. Clean and replace the air filter and fuel injector regularly.
When I previously drove an LNG natural gas vehicle, I also encountered the issue of being unable to accelerate, which I suspected might be due to a blockage in the fuel supply system. Unlike gasoline, LNG doesn’t evaporate as easily, especially if the vaporizer is clogged or aged, the natural gas supply can be cut off, resulting in no response when pressing the accelerator. Additionally, the electronic control unit (ECU) might receive abnormal signals, such as a dirty or faulty throttle position sensor, preventing commands from reaching the engine. Furthermore, insufficient fuel pump pressure or a faulty regulator can also lead to a lack of power in the vehicle. I recommend not overlooking this issue, especially in winter when LNG is prone to frost. It’s advisable to check the vaporizer and filter screen for cleanliness in advance. If you’re not skilled in repairs, promptly visit a professional shop to scan for fault codes with a diagnostic tool. Otherwise, driving under such conditions can be hazardous. Fortunately, after my vehicle was repaired, the issue never recurred.
