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BMW 3 Series E46since 1998 releaseRepair and operation of the car |
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BMW 3 Series E46 + BMW 3 cars (E46) + Current leaving and service - Engine - Procedures of repair of the engine Removal and installation of the lower cover of a motive compartment Removal and installation of a box of an air inlet Check of a compression Removal and installation of the inlet pipeline Removal and installation of a head cylinders / replacement of sealing laying Removal and installation of camshafts Removal and installation of the vacuum pump Removal, installation and tension of a maple belt + Engine lubrication system + Cooling systems, heating + Power supply systems, injection and release + Engine electric equipment + RKPP and transmission line + Automatic transmission + Coupling and power shafts + Brake system + Suspension bracket and steering + Body + Onboard electric equipment + Schemes of electric equipment |
Check of a compression Check of a compression allows to draw a conclusion on a condition of the engine. During check it is possible to establish whether valves and pistons (piston rings) are serviceable or they are worn-out. Besides, results of check show whether it is necessary to replace the engine or it needs to be repaired. For check it is necessary компрессометр.
The difference between values of pressure of a compression of separate cylinders should not exceed 1.0 bars at the petrol engine, and 3.0 bars at the diesel. If one or several cylinders in comparison with others have pressure differing on higher value it indicates damage of valves, wear of piston rings or damage of laying of a head of cylinders. In this case the engine needs to be repaired or replaced. The size of pressure is of secondary importance as it depends among other on the used measuring device. Petrol engines it should have no less than 10 bars.
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