What are the symptoms of a clogged fuel filter?
1 Answers
The symptoms of a clogged fuel filter are as follows: 1. Engine stalls easily. After the fuel filter is clogged, fuel delivery is affected, causing insufficient fuel supply to the engine. This results in noticeable jerking while driving or shifting gears, and the engine is prone to stalling at idle. 2. Reduced driving power. Due to poor fuel supply, the engine's power output decreases, leading to weak acceleration and reduced vehicle speed. 3. Engine shakes at idle. Moderate clogging of the fuel filter not only reduces the car's power but also causes the engine to shake at idle. The methods to address a clogged fuel filter are as follows: 1. First, conduct a preliminary analysis to determine if the jerking phenomenon is caused by a fuel system issue. If it is confirmed to be a fuel supply system problem, measure the pressure of the fuel supply system and the fuel pump. 2. Connect a fuel pressure gauge to the fuel line between the fuel pressure regulator and the fuel injector using a T-joint. Install the air filter, start the engine, and test the fuel supply system pressure under idle, medium-load, and high-load conditions. 3. Then, adjust the throttle opening. The reading on the fuel pressure gauge should change with the throttle opening, meaning the pressure value increases as the throttle opening widens.
