E46 series BMW 3
since 1998 of release
Repair and car operation
E46 series BMW 3
+ BMW 3 Cars (Е46)
+ Current leaving and service
- Procedures of repair of the engine
Removal and installation of the bottom cover of an impellent compartment
Removal and installation of a box of an air inlet
Removal and installation of the inlet pipeline
Removal and head installation 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
+ System of greasing of the engine
+ Systems of cooling, 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
+ Onboard electric equipment
+ electric equipment Schemes
Compression checkCheck of a compression allows to draw a conclusion on an engine condition. 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 is necessary for repairing. For check it is necessary компрессометр.
The difference between values of pressure of a compression of separate cylinders should not exceed 1.0 bar at the petrol engine, and 3.0 bar at a diesel engine.
If one or several cylinders in comparison with others have the 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 it is necessary to repair or replace the engine.
The size of pressure is of secondary importance, as it depends among other on the applied measuring device. Petrol engines should not have it less the 10th bar.