Adjustment of carburetor K-151 with your own hands: detailed description

Carburettors "Pekar" have always been highly reliable, and car owners practically do not have any serious problems with them. But in order for the device to show really high efficiency, it is important to properly adjust it. The quality of the engine will depend on how well and finely tuned the tuning is. Let's see how the adjustment of the carburetor K-151 is carried out . The process is simple, but quite responsible.

Why do I need adjustment?

This knowledge is necessary for the engine to function properly. Correctly to adjust the mechanism it is necessary and for that the fuel consumption was at an acceptable level, but thus did not fall power and twisting moment. Incorrectly exposed jets will contribute to over-consumption of the mixture, which can be 2-2.5 times more than usual.

Variants of fuel mixture formation

Experts distinguish several options for the ratio of fuel to air for motors. The most optimal is the proportion where one part of gasoline has 15 parts of air. There is also a more effective mixture. Here the proportion is one part of the fuel for 12.5-13 parts of air. This mixture is the richest. The car will quickly gain momentum, but the fuel consumption will also be quite high. For those who like to save money, there is also a variant of mixture formation. Here, one part of the gasoline accounts for 16-16.5 parts of air. The car practically does not lose in dynamics. Adjusting the carburetor K-151 allows the owner to adjust the unit to the existing need and his own desires, but if the engine's operation is stable and generally suits the owner, the setting can be postponed.

About carburetor maintenance

However, there are cases when you can not do without tuning. The disadvantage of all carburettors is their property to be hammered. Today, at gas stations, it is often possible to fill in a tank with poor-quality fuel. Yes, someone will say that there is a fuel filter. But often he can not cope with small mote, which fall into the carburetor K-151. Jets are clogged, as a result, fuel can no longer enter the chambers in full. To clean them, you can not use pieces of wire - just a non-contact spray cleaner. Also, the need for tuning can arise when some parts of the unit fail. The failed elements are changed to new ones, but without tuning to the optimal work, one should not count.

Can I ignore it?

Adjusting the carburetor "Pekar" K-151 will help to avoid increased fuel consumption or vice versa, its insufficient supply to the engine. The consequence of a lack of gasoline in the mixture may be a reduction in engine power. In addition, if the settings have not been performed or are made incorrectly and in this condition the device has been used for a long time, the engine parts may malfunction. Engine repair in modern conditions is not cheap. Therefore, it is better to spend a little time and adjust the carburetor K-151. Adjusting it is a simple procedure. The maintenance is reduced to washing and blowing, and all this can be done in the conditions of a conventional garage using conventional tools.

How to regulate idling

On the units of the plant "Pekar" this operation is very important. If XX is adjusted, then the engine will please the owner with steady work. Also in exhaust fumes, there are practically no harmful emissions. Such a car will not cause significant harm to the environment. If the car is operated for a long time, and the fuel and air filters are clogged, then fuel consumption will increase significantly at idle . Adjusting the carburetor K-151 consists of a few simple steps. The first thing they do is start and warm up the engine. Then on the shank, find the screw that is responsible for the quality of the mixture. It has a stop that prevents it from spinning. This limiter needs to be removed. Next, adjust the element responsible for the quality of the mixture. Rotating it, looking for a position in which the crankshaft idling will pick up most of the revolutions. Then adjust the screw, which is responsible for the quantity. The speed of rotation of the crankshaft is increased by another 100-200 rpm. When the element responsible for quality is twisted, the crankshaft rotates at a lower speed. It remains only to set the optimum frequency. With this setting, the machine has the maximum dynamics and economical fuel consumption. All done correctly, if at the moment of screwing the quality control screw, the revolutions will start to decrease. This is a sign of depletion of the combustible mixture. If there is no speed drop, most likely the unit is defective or clogged. In the latter case, it can be "resuscitated" with a carburetor cleaner. But it is impossible to do this without an analysis of the mechanism.

How is the level of fuel in the float chamber regulated?

The correctness of this setting determines the amount of fuel that the engine will consume. If the level is set incorrectly, there will be an increased fuel consumption. Still there is a variant when the carburettor submits in chambers of combustion a mix without gasoline - only one air. An incorrect level can lead to significant fuel costs or serious engine repairs. To this level, not only the unit from "Pekar", but also the majority of other analogues, regardless of the manufacturer, is sensitive. Adjustment of carburetor K-151 will be carried out with the help of devices - you need a ruler and a drill with a diameter of 2 millimeters. The first thing is to find the most flat place - so work much more comfortable. Then it is necessary to remove the air filter. After that, start the engine and leave it so for five minutes. Then the lid is removed from the carburettor and the fuel level is measured by the ruler. Measurements should be done as quickly as possible. When the chamber is open, gasoline evaporates from it - the engine and the power system is warmed up, and this further accelerates the evaporation. For the K-151 model, the normal level is 2.15 centimeters. This is how the manufacturer guarantees good operation of the device. If the level is higher or lower than the norm, you need to configure it. Adjustment is a change in the position of the float.

Carburetor K-151: adjustment of floats

To properly adjust the fuel level, it is recommended to find in advance some device that could help with the measurements. Any object with a diameter of up to two millimeters is suitable. Then turn the unit and put it on the most flat place - this will increase the chances of making measurements correctly. Next, see the clearance from the bottom of the float to the liner made of cardboard. The normal distance on the working carburettor is not more than two millimeters. If the level of fuel in the float chamber is incorrect, the tongues are bent. Then all measurements are taken again - each time you need to check whether everything is correct. The most common today is the float device (such as the carburetor K-151). The device, the adjustment of the units are as simple as possible, and the design allows obtaining stable characteristics of a mixture of fuel and air.

We measure the positions by means of a caliper

A depth gauge will be used. Measured from the very top of the float to the cardboard pad. The normal result, in which you do not need to adjust anything else, is 3 centimeters.

Is everything right?

Adjustment of the carburetor "Gazelle" K-151 can be performed incorrectly due to the fault of the owner. It is necessary to know exactly whether everything is set up. For testing, the unit cover is laid vertically. Then carefully inspect the tab on the lever. If the adjustment is carried out correctly, it will slightly weaken the ball-damper of the needle valve. Also, the tongue is located almost in parallel with the needle valve. The axis of the punching of the float must be equal to the surface of the lid.

Setting the trigger

The launch system is considered one of the most important. She reports the start of the engine. If the elements of the system are not working properly, this is a serious repair. Often it happens that, with complete serviceability of all components, the starting system does not function as intended by the manufacturer. Adjustment of carburetor K-151 (UAZ including) should be carried out only on completely removed unit. The first thing is to open the throttle and find the control lever of the starting system. It is turned to the stop and fixed. Then, when the throttle is released, measure the clearance between the flap edge and the chamber. It should be approximately 1.5 mm. Then unscrew the lock nut. It will help to work with the emphasis in the form of a screw on the throttle lever. The screw is rotated every half turn. As a result, the element will be perpendicular to the cam. The length of the thrust is then measured and, if necessary, adjusted. This is the pull with which the cam of the trigger is connected to the levers on the axis of the air damper. When the latter is closed, and the lever is at this moment wrapped up to the stop, the gap should be no more than 0.2-0.8 mm. If it is not, unscrew the thrust head. To reduce the gap, the head is tightened, reducing the length of the pull.

Finally

The carburetor is an important device in the car. It provides the engine with fuel. For all who have a carburetor K-151C, the adjustment will now not be difficult. After the adjustment, it is necessary to run a break-in test in order to identify and eliminate the shortcomings.