Where is the car carburetor located?
2 Answers
The car carburetor is located between the intake pipe and the air filter. The function of the carburetor is to utilize the kinetic energy of the incoming airflow to atomize gasoline. The carburetor automatically adjusts the mixture ratio according to the engine's different working states, delivering the corresponding amount of air-fuel mixture. To ensure a well-mixed and uniform mixture, the carburetor also has the effect of atomizing the fuel for smooth engine operation. The method for adjusting the carburetor mixture ratio is as follows: 1. When adjusting the needle valve, do so at full throttle, but be careful not to exceed 5 seconds at high RPM to avoid engine damage due to excessive speed. The adjustment interval should be 5 to 10 seconds. 2. Turn the needle valve counterclockwise and observe if the RPM decreases. If the RPM continues to rise, keep turning counterclockwise until the turning point where the RPM starts to drop. 3. Continue adjusting the needle valve counterclockwise to reach the desired RPM range.
The carburetor on my vintage car is mounted right on top of the engine, connected to the air filter box and intake manifold. Every time I need to clean the carburetor, I have to remove the entire air filter assembly first, and those three mounting bolts are particularly prone to stripping. But nowadays, new cars mostly use electronic fuel injection systems - carburetors are really just relics from 1990s-era vehicles. The working principle of carburetors is actually quite interesting: they use the engine's intake vacuum to draw fuel from the float chamber and atomize it, with the mixture ratio controlled by the needle valve and jets. If you're having trouble with cold starts or unstable idling, there's an 80% chance the fuel passages in the carburetor are clogged. My advice is not to tinker with it yourself - the disassembly and reassembly have extremely high requirements for sealing integrity. After spraying carburetor cleaner, you still need to use compressed air to blow through every tiny passage.
