What Causes the Xiali Fuel Injector Not to Spray Fuel?
2 Answers
Xiali fuel injector not spraying fuel can be caused by insufficient fuel, damaged fuel pump, high-pressure fuel pump failure, etc. The relevant introduction of the fuel injector is as follows: Definition of Fuel Injector: The fuel injector used in modern cars is essentially a simple solenoid valve. When the solenoid coil is energized, it generates suction, lifting the needle valve to open the injection hole. Fuel is sprayed at high speed through the annular gap between the needle valve head and the injection hole, forming a mist that facilitates complete combustion. Working Principle of Fuel Injector: The fuel injector itself is a normally closed valve (a normally closed valve means that the valve remains closed when there is no input control signal; whereas a normally open valve remains open when there is no input control signal), with the opening and closing controlled by the up and down movement of a valve needle.
Having worked on cars for many years, I've encountered quite a few cases where the Xiali's fuel injectors fail to spray fuel. There are numerous possible causes: the most common is a faulty fuel pump failing to supply adequate fuel pressure; a clogged fuel filter can also cut off fuel supply; carbon buildup causing the injector to stick or wear out—low-quality gasoline is the usual culprit here; electrical issues like blown fuses—older cars like the Xiali suffer from rapid wiring degradation, so the fuse box needs regular checks; a malfunctioning control unit or faulty crankshaft position sensor can lead to signal errors, preventing fuel injection commands from being sent; unstable battery voltage affecting power supply is another factor. For diagnosis, start by listening for the fuel pump's operation, check if any fuses are blown, and try replacing them with new ones; regular maintenance is key to prevention—using quality fuel and cleaning the injectors can extend their lifespan. If the car truly won't start due to this issue, seek professional repair immediately—don't tinker randomly and risk damaging the chassis.
