Repair of engines M10/M20 of the car BMW 3 Series E30

Introduction to the BMW 3 Series E30 Manual
This manual is for BMW 3-series vehicles, type E30, saloon from 9.1982 to 8.1990, estate from 9.1987 to 2.1994: 316i 1.6 l / 73 kW (100 PS) 9.88-2.94 Kat. 316...

General information about engines
BMW cars are equipped with a liquid-cooled in-line engine with 4 or 6 cylinders (depending on the engine displacement). The new 4-cylinder M40 engine, produced...

Removal and installation the engine
The engine is removed without the gearbox, upwards. The intake and exhaust manifolds, as well as the carburetor and generator, remain on the engine. In no case...

Removal and installation the timing belt
6-cylinder engines M20 (320i, 325e), M21 (324d/td) As part of the maintenance schedule, the timing belt must be replaced every 4 years. If the timing belt is...

Removal and installation, checking of the chain tensioner
Engine M10, M30 (models 316 and 316) produced before August 1988, 318i produced before August 1987, 323i and 325i) If the chain is making a loud noise, which...

Removal and installation the cylinder head cover
Removal Remove the air filter (see section " Removal and installation the air filter "). Disconnect the crankcase ventilation hose from the cylinder head...

Removal and installation the cylinder head
Signs of a faulty cylinder head gasket include: Reduced engine power. Decrease in coolant level, white smoke from exhaust gases when the engine is warm....

Removal and installation the camshaft
Removal Please note: This description is for a four-cylinder engine without timing belt only. Remove the cylinder head and place it on 2 wooden blocks, see...

Removal and installation rocker arms
Particularly strong valve knocks can be caused by loose rocker arm sliders. Caution: When reinstalling, the valve drive parts must be installed in their...

Removal and installation valves
Caution: On 316i, 318i models, the exhaust valves are sodium filled to improve heat dissipation. They cannot be melted down or used as a tool (for example, as...

Checking the valve guides
When carrying out repair work on cylinder heads with leaky valves, it is not enough to grind or replace the valves and valve seats. In addition, it is...

Processing of valve seats in cylinder head
Treatment of valve seats with increased wear and burning can be performed on all engines except four-cylinder engines with hydraulic valve clearance...

Lapping valves
With perfectly machined valve seats and new valves installed, lapping the valves is not necessary. The valves must be ground with a grinding paste. To ensure...

BMW 3 Series Maintenance Schedule
Maintenance intervals on BMW vehicles are set depending on operating conditions and are displayed to the driver on the dashboard. At the same time, there are...

Prompt car maintenance
Routine maintenance is performed every 10,000 km, but not less than once a year. Under severe operating conditions, such as driving mainly in the city and over...

Routine maintenance
Routine maintenance is performed every 20,000 km or at least once every 2 years. Engine and clutch Engine: Oil and full-flow oil filter change. Valves:...

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