How is the Engine Compression Test Performed?

 Engines, which have a great place in vehicle technology, have the greatest importance for the health of the vehicle. For this reason, engine health is the most important factor in vehicles. For this, many related maintenance and tests are applied to the vehicle in technical services. One of them is known as the Engine Compression Test.

Engine compression test is done to measure whether there is a compression loss in the vehicle. Drivers can easily detect whether there is a compression leak or not, as a result of careful observation. Particular attention should be paid to these issues in this regard. If there is a decrease in engine power, one of the causes is compression leakage. Another reason for the increase in fuel consumption is compression leakage. One of the compression leak indicators is that the engine starts to burn more oil than normal. If grayish-bluish smoke comes out of the exhaust, this indicates a compression leak. In such cases, a technical service should be visited for the health of the engine. The compression test applied here is performed in two ways, wet and dry. While the dry compression test is the most common here, a wet test can also be performed for further examination. For this test, the vehicle must first be warmed up. After that, first the fuse of the vehicle and then the spark plugs are removed. After that, the compression test indicators are inserted into the empty spark plug sockets and the vehicle is started. Starting from the indicator values after the start, it is seen how the pressure distribution is in the cylinder. By comparing these values with the factory values of the vehicle, it is understood whether there is a problem. Here the factory values and the measured value must be the same. If these test results are normal, the wet test is not applied. If there is a problem, a wet test is performed to determine the source of the leak. This test is the same as the dry test. The only difference is that oil is put into the cylinders.