What causes the FAW J6 to not accelerate and only idle when pressing the throttle?
2 Answers
FAW J6's inability to accelerate when pressing the throttle is generally caused by fuel line blockage, exhaust system failure, severe throttle valve carbon buildup, or throttle pedal malfunction. Below are detailed explanations about the throttle acceleration issue: 1. Cause explanation: When the car's fuel system is blocked, especially if the fuel injectors are clogged, fuel cannot be adequately transported, resulting in incomplete combustion within the engine cylinders. 2. Throttle valve carbon buildup: When a car has been driven for excessive mileage without cleaning the engine throttle valve, carbon deposits form, affecting fuel combustion and ultimately leading to reduced vehicle power and increased fuel consumption.
My Liberation J6 had the same issue a while ago—stepping on the gas pedal all the way but the speed just wouldn’t go up, just revving loudly in place. After inspection, it turned out to be a fuel system problem. The diesel filter was clogged like a sieve, and it even dragged the diesel pump down. With the fuel line blocked, the engine couldn’t get enough fuel, so it just threw a tantrum and idled. I also checked the intake system, and the air filter was surprisingly clean. In the end, it took half a day to clean the fuel lines, replace the diesel filter and pump, and now it accelerates like a rocket—smooth as a new truck. Maintenance on these trucks is crucial; changing the filter every six months is a must.
