Where is the fuel nozzle of the car?

The fuel nozzle of the automobile is located on the intake manifold or on the cylinder head. If the fuel nozzle is located on the intake manifold, the fuel injection mode of the engine is multi-point injection. If the nozzle is on the cylinder head, the fuel injection mode of this engine is direct injection in the cylinder; If the engine has two sets of injectors, the fuel injection method used by the engine is mixed injection. The fuel injector is a solenoid valve. By opening and closing, the fuel can be controlled to form a spray and enter the engine, which is conducive to more complete fuel combustion. Nozzle fault and its solution: 1. Nozzle blockage: chromium oxide is coated on the flat plate for grinding. If the cylindrical surface of needle valve is seriously worn, it should be replaced in time; 2. Poor sealing: Apply chromium oxide or toothpaste to the sealing belt at the needle valve end; 3. Piston wear: replace the piston.