What are the reasons for intermittent throttle failure in the FAW J6?
2 Answers
The reasons for intermittent throttle failure in the FAW J6 are as follows: 1. Carbon deposits: Carbon buildup is a common issue in vehicles. As the vehicle is used, internal components may accumulate sludge or other contaminants due to incomplete combustion, which can adhere to parts and cause the engine to stall during operation. 2. Road conditions: Besides internal components, road conditions can also affect throttle response. For example, driving in congested traffic with frequent acceleration and deceleration can prevent vehicle components from responding promptly, leading to throttle failure and weak starting performance.
My FAW J6 had a similar issue, which turned out to be fuel system related. Initially, the fuel filter was mostly clogged, causing power loss during uphill climbs due to insufficient fuel supply. After some troubleshooting, I found a tiny crack in the fuel line between the tank and pump – it would let air in during bumps, creating vapor lock. The most frustrating part was slight wear on the diesel injection pump plunger, especially noticeable when cold. Focus on these three checks: drain the water separator, inspect the entire low-pressure fuel circuit for leaks/aging, and listen for abnormal pump noises. Always use OEM filters – aftermarket ones have inconsistent pore sizes and clog easier.
