Reading Compression

Carry compressometer rotating crank the starter motor at full throttle depression. Whenever Mashable listens, a sympathetic response will follow. Arrow komressometra will show compression of the cylinder under dry condition the engine and it is very the importance of reading when the walls of the cylinder is not in oil. Then you need to make repeated measurement of compression but with oil added in an amount of 5-10 ml. This figure will determine the status of valves fit in the saddle, the Thus, we define the state of the working part of the cylinder head. If a big difference between the readings you can speak with confidence about a good fitting in the valves to their saddles, if the difference is not significant then you need to perform preventive maintenance cylinder heads. Normal compression readings, measured on the 'dry' engine for the petrol from 10 to 12 bar and diesel from 28 to 32 bar. In this case, readings should be the lowest spread in different cylinders. If the reading is below 10 bar – increased wear of the piston group, where above 12 bar – coking piston group.

Compression can rise under 'wet' measurements at 4-6 bar for gasoline engines and at 18-24 bar diesel. With 'hot' measurements of the compression necessary to drain the inner cavity of the cylinders is not a lot of technical kerosene: add to the candle holes of 10-15 ml and make an airing in the starter mode and After that the compression. This method of diagnosis is called 'static measurements of compression' because measurements are made at no engine running at 300-400 rpm.

Navigation