A device for measuring engine compression

As a result of prolonged operation of the vehicle may receive the impression that the engine has lost its former power. This may be caused by a natural mechanical wear. Usually if the engine has technical problems, we note it for the following symptoms: cold starting irregular operation of the engine, increase oil consumption and fuel, increasing the coolant temperature, etc. State of the engine can be determined by compression. Than to measure compression, we describe in the article "A device for measuring engine compression. Compression Engine With an increase in engine wear decreases power and increases fuel consumption and oil. Engine idling noticeably vibrates. You can try replacing the candles, but if after changing nothing changes, to determine the cause needed to measure the compression. Measurement of compression is one of the most accessible means of diagnosis. What is compression? Compression - is the value of the maximum pressure that is created in the cylinder at idle. What happens when you decrease the compression and how it improved? Compression is reduced to 24 kg / sq. See Engine at this plant is tolerant. The temperature of air decreases, and gradually the outbreak of fuel is not happening. Compression can be improved if you pour oil into the cylinder diesel engine. To do this, unscrew the glow plug, then a few tablespoons of oil poured into each hole. The engine nabroste rag, and includes a starter. Engine for two-three turnover removes excess oil. Replace the spark and start the engine. The wire which is coming to a glow plug must not be shorted to ground. Engine is hot and the heat in the street, with the glow plugs are OK. The engine in this case would to be got even at compression of 22 kg / sq. see if you have to pull the car in tow, trying to make, increase the frequency of rotation of the crankshaft. Air will not have time to run through a bad seal piston - cylinder. This will raise the temperature of the compressed air. True, you can make the starter not the position of 12 volts, and 24. To do this, connect two batteries in series. But we must warn that such actions you risk burning the starter. The engine needs repairs, if the compression is less than 24 kg / sq. See liners require recovery. Replacing the piston rings will not give a positive effect. No experts here can not do. They block rastachayut, vpressuyut new liner, rastachayut cylinder the size of the existing piston. Another reason for the decline is the destruction of the compression stroke. When using low-quality fuel fail pressure valves. In the combustion chamber comes as a result of too lean fuel mixture. If there is bad work pressure valve at idle, then the result will be that the piston starts to crumble. Compression at the same time sharply reduced, and the cylinder ceases to operate. Engine fumes. Valve and its seat are a pair of plunger. The plunger is inclined at an angle of 20 degrees should fall smoothly. If the plunger "thumps" when tilted at 30 degrees or more, it talks about it in tatters. With such a plunger engine can not develop its full capacity and will wind up badly on hot. How to check the pressure valve and a plunger? If the needle shut-off valve under its own weight falls into the saddle, which is tilted at 20 degrees, then everything is normal. Do this several times. And every time you need to rotate the saddle. Should not be the slightest scuffing. Otherwise, the valve should be cleaned, and if it does not give a positive result, the valve should be replaced. Measurement of compression. Compression can be measured, if instead of candles to set compressometer. This device is a manometer which is connected to a hose with a nipple and check valve. If you rotate the crankshaft engine, hose pumping air until the pressure in the hose becomes equal to the maximum pressure in the cylinder. The value of such pressure gauges and displays. The device is able to identify and failure and to evaluate the technical condition of the whole engine. But the results obtained with this instrument, often require additional analysis. In contrast to the domestic construction compressometer foreign firms produce sets with a set of adapters. They allow one to measure the compression on the cars of any model and all brands. Use more kompressografy. They serve the same purpose as compressometer. Only the measurement results are recorded on paper or on a special plastic cards. And it allows you to archive them for later analysis. There are various modern motortestery. They quickly and effectively measure compression. These devices record the amplitude of the pulsations of electric current, which consumes while scrolling starter. There is a direct dependence of the pressure in the cylinder capacity of the starter to rotate the crankshaft. Simultaneously measured in compression for only a few turns in all cylinders. In this case, there is no need to turn out the candles. The disadvantage motortestera can assume that the results are expressed in relative units. It may be, for example, interest to the cylinder, which works better. Only the most expensive models motortesterov measure the absolute amount of compression in each cylinder. The sequence of measurement: Measurements should be done after the engine warms up to operating temperature. After warming up disabling the ignition to turn out all the spark plugs. Setting the gear lever into neutral position, click on the clutch pedal and accelerator. In the hole for the spark plug is inserted tube device. Provernuv include starter and crankshaft, at least eight cycles of compression, follow the indications compressometer. The cylinders are best filled with pressed the accelerator pedal until it stops. Measurements were made to all four cylinders. The measurements are compared with technical data. We told you how and what you can measure the compression engine in the article "A device for measuring engine compression. Remember that the results of measurements should be treated with caution. Should know when the results can be relied upon with confidence, and when only take note of them.