BMW 3 series E30

Since 1983-1994 of release

Repair and car operation

+ 1. The maintenance instruction
+ 2. Maintenance service
+ 3. The engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
- 7. An exhaust system
   + 7.1.2. An exhaust system of cars 318i
   + 7.2. System of decrease in toxicity of the fulfilled gases
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. A running gear
+ 12. A body
+ 13. An electric equipment
+ 14. A good advice

7. An exhaust system

7.1. An exhaust system

7.1.1. Introduction

The exhaust system of considered cars consists of a final collector, каталитического neutralizer, the mufflers, connecting pipes and details of their suspension bracket (arms, collars, pillows).

Typical fastening of pipes of an exhaust system

The exhaust system fastens to a body through arms and rubber pillows. At failure of any of details of system engine work is accompanied by the raised noise.

For exhaust system maintenance in good repair periodically check a condition of details. Check up presence of the dispersed seams, traces of a burn-out and проедания corrosion, and also other defects which are at the bottom of hit of the fulfilled gases in salon. The failed details are not subject to repair.

If system details do not give in to removal because of прихвата owing to corrosion they should be removed the sharp. Usually this procedure is carried out in workshops by means of autogenous cutting. However, at desire to save on cost of these works and in the absence of own gas-welding equipment, резку it is possible to execute ножовкой.

At exhaust system repair observe following rules:

1. Exhaust system details remove one after another, since terminal section and finishing forward section.

2. To facilitate отворачивание nuts and bolts grease with their getting liquid.

3. At replacement of pipes and mufflers necessarily replace details of their suspension bracket.

4. At assemblage grease all carvings with fixing structure.

5. Between the bottom of a body and exhaust pipes there should be a backlash to prevent an overheat of the bottom and destruction of an anticorrosive covering and a rug. Special attention at assemblage give to installation of neutralizer and теплоизоляционного a guard.

Backlash between a terminal exhaust pipe and a body


Collar on an arm of a back suspension bracket

For backlash adjustment between a terminal exhaust pipe and a body release a bolt (arrow) and move the muffler.

On a part of cars adjustment of a terminal exhaust pipe concerning a body is provided.