The movement of the car is primarily ensured by the force exerted on special motor valves. The pressure is due to the combustion of the mixture of fuel and air, for the appearance and movement of which the carburetor is responsible for the engine. The process of mixing fuel and air is based on two physical laws - the Bernoulli principle and the Venturi effect, according to which, the lower the pressure, the greater the speed of air movement.
The air flow in the carburetor device is controlled by the throttle valve, and it is controlled by the accelerator pedal. The scope of carburetors remains old car models , freight vehicles , as well as motor boats and small aircraft. Despite the fact that the device itself does not need to carry out various measures for its maintenance, high-quality carburetor tuning is extremely important to ensure optimal engine performance. In this regard, we dwell in more detail on those points that can cause certain carburetor malfunctions.
Fuel leak
One of the most common problems is the problem of fuel leakage. As a rule, when a leak is detected, all the associated malfunctions are associated with incorrect operation of the float system, or are caused by too large a value. The normal pressure level is 4-7 psi.
Carbon formation on spark plugs
When the wrong amount of fuel is supplied to the spark plugs, soot forms on them, this is most often due to either a malfunctioning of the float, high pressure, or a malfunction of the float chamber. Also, increased fuel supply is caused by failure of the valve.
Engine malfunctions when idling
If an incorrect functioning of the engine is detected at the specified settings for a certain speed during idling, the malfunction is often justified by malfunctions associated with the carburetor connecting to the accelerator pedal and the wire. In this case, disconnecting the wire and manually checking the operation of the throttle will help to adjust the carburetor. Another reason is also not carburetor adjustment, but the presence of contaminants or exposure to external factors (corrosion).
Setting up a carburetor primarily starts with warming up the engine. This is a prerequisite. When carrying out any actions on the engine in a cold state, carburetor tuning will be meaningless. The next important step is to ensure that the throttle pedal is removed from the throttle. Next, it is necessary to disconnect the crankcase ventilation tube, after which it is necessary to make sure that there is no vacuum in the tube of the timing controller. The next step is to detect quality screws, the very screws that are responsible for regulating the mixture. The screws must be tightened in a clockwise direction strictly one at a time until an unstable engine operation is achieved. If the engine shakes convulsively, stop twisting and turn it back exactly one revolution, the engine will begin to run smoothly.
To ensure the smooth operation of the engine, this carburetor setting is necessary with similar measures for each quality screw. This will achieve a smooth sound in the engine with the exception of all kinds of cotton emissions.