"Pirburg" 2EZ - carburetor with semi-automatic mechanism for a cold start. This means that before starting a cold engine should be 1-2 times to press the gas pedal, and the fully closed choke, and throttle is set to trigger backlash adjustment for the higher speed of heating. As the engine warms up the coolant heat affects the bimetallic spiral spring, which is trying to turn around and open the choke. To reduce the high speed necessary in the process of heating the engine several times to press the gas pedal. Speed ??engine warm-up depends on the serviceability of the thermostat in the engine cooling system. At 60 ° C is due out in the carburetor idle speed. During the summer warm-up time of the engine to 60 ° C is about 2-3 minutes. In winter - from 4 to 7 minutes. The main fault carb "Pirburg" 2EZ 1. Clogged fuel filter at the inlet to the carburetor. 2. Termovremennoy pneumatic valve. Controls the time of opening the second stage of start-up clearance damper. The second stage is opened in 3-5 seconds after the first. 3. A cardboard strip to be in satisfactory condition. 4. Needle valve in the float chamber and float. 5. The fuel level is not regulated, and problems with this mechanism does not exist. 6. Main jet. At the first chamber is set smaller, and the second - more. 7. Idling jet. During the operation there is a significant blockage of the upper (air) part of the jet. This is the reason for enrichment cold. stroke. Clogging of the lower (fuel) jet parts leads to the impoverishment of the mixture and dropouts hol.hoda. 8. Vacuum unit cold start "Pulldown". Damage to the diaphragm or a rubber tube connecting the device with the carburetor, clogging the holes in the carburetor are the causes of poor performance of the cold engine. 9. Cardinality economizer mode. His faults are analogous to faults discussed in the section "Pirburg" 2e2. 10. Composite parts of the accelerator pump. Damage to the pump include: damage to the diaphragm or rubber intake valve, a broken spring damper diaphragm (steel ball dangles freely in the body damping), clogged injectors and damage its seal. 11. Injector accelerator. 12. Electromagnetic valve - antiknock system cold. stroke. When the ignition is powered by a "+" 12 volts. The carburetor on a rubber cushion should have a "mass", performed by a separate wire. 13. Grabbing the plastic levers choke. In older editions of the carburetor 2E3 in the control device used metal choke levers. Then this mechanism worked smoothly. On newer models began to apply the levers of plastic and it has reduced the reliability of the mechanism. Strong plastic arm sticking begins when cleaning these parts in gasoline. It turns out that dirty instruments are rotating properly, and after washing in gasoline at all stop working. In order not to create unnecessary problems, it is necessary to remove the carburetor mark this site and clean it from dirt blowing air from the compressor. But if to you to repair the carburetor got to have a tight rotation of the choke, then to resolve this problem requires complete disassembly of the unit and carefully polished with sandpaper or clean all moving surfaces. It is noticed that any lubrication of these components provides only an initial improvement. In what is sticking to the mud and sticking there. Therefore, lubricate plastic lever assembly is not recommended. When disassembling the need to be careful, because the plastic can easily break. Disassembly should start with a compression into two halves and chastikovogo limiter at the end of the mechanism. 14. Housing starter, air damper control. Constantly open or opening soon thermostat the engine cooling system leads to long heating of the motor. In winter, the heating may not end. This is the reason for the increased consumption of gasoline. 15. Throttle actuator is a second camera. Tight rotation throttle the second chamber - a characteristic problem of all dual chamber carburetors. Contamination of the flap occurs when a driver for a long time do not use power ratings regimes with the opening of the second chamber. Nagar and gum deposits are firmly "cement" the flap and diffuser. During cleaning the carburetor, make sure to clean the holes in the second to the first diffuser l measures, through which enters the vacuum actuator. 16. Throttle damper of the first chamber is used to smooth the closing dampers in the mode of forced cold. stroke. The dramatic opening of the damper increases the amount of harmful emissions during the PHH. Faulty damper does not close the flap and turns cold. stroke remain elevated. 17. Adjusting screw quality (composition) of the mixture cold. stroke. 18. Details throttle actuator. Damage to the return spring on the axis of the throttle trim eliminates bend the rest of the spring for the lever back. During cleaning the carburetor can not ignore the air jet in the transitional system of the second camera. Its location on the upper lid in the same way not easily carburetors and 2e2 2E3. Air jet is a tube with a hole drilled at the side of the air. The top end of the tube is closed, and the bottom is a main jet. To check the purity of the holes with a syringe to apply to the fuel jet fuel under pressure and to observe the yield of gasoline through the air jet. Scored carbon air jet in the transitional system of the second camera behaves as follows: during a quiet ride with the opening of the throttle only the first camera no problems noted. At the first attempt with a sharp acceleration throttle the second chamber through a main jet in the transitional system is pumped gasoline. And as the air jet of the system sludge clogged, the fuel begins to be pumped continuously from the float chamber to choke the second chamber, even after the closing of the throttle. This situation leads to a dramatic enrichment of the mixture at idle, the engine stalls in neutral and the subsequent launch will be very difficult, because the intake tract is filled with an excess of pairs of gasoline. Faulty air jet cleaning is eliminated. The system idle, there are two points at which a marked accumulation of carbon in the operation of the carburetor. First - this is the upper part of the air jet idling. Second - this is the air hole in the hull of the first chamber of the diffuser. Accumulation of carbon in these areas leads to a significant enrichment of the mixture of idling. While cleaning the carburetor should pay special attention to these places.
No comments:
Post a Comment