How to measure engine compression

In a few minutes we can measure the level of engine compression, and thus have a better idea of ​​the overall condition of the engine over the years.

Attractions for measuring engine compression

The engine compression can be done with ease by a compression tester (gauge), of which can be purchased on the market. This review gives good information on the status of engine wear.

Steps for measuring engine compression

• For reviewing reliable compression you need to put the engine at normal operating temperature (85 ° approx. Or recommended by the manufacturer of the car).
• With the engine stopped hot and take out all the power lines of the spark plugs. Pay close attention to the order in which the power lines and then connect them in the same position are connected.
• Unscrew spark plug and place there the direct reading gauge looking after completely cover the hole in the cylinder head where the plug is inserted.
• To measure the engine compression in the cylinder starter (by someone else) is driven for a few seconds with the accelerator pedal fully depressed.
• Place the spark plug removed and repeat steps 3 and 4 for each of the remaining cylinder engine.
• The pressure read on the gauge should be equal for all cylinders and representative recommended by the engine manufacturer, a difference of 1.5 bar between cylinder gasoline engine allows (when we have the data compression value given by the manufacturer, may use as a general rule the ratio value engine compression adding 1 ie for an engine having a compression ratio of 10:1 will have a pressure value measured on the gauge of 11 (10 +1 )).