General information about engines BMW vehicles are equipped with an in-line water-cooled engine with 4 or 6 cylinders, depending on the engine displacement). The new 4-cylinder M40 engine,...
Removal and installation of the engine The engine is removed without the gearbox, up. The intake and exhaust manifolds, as well as the carburetor and alternator, remain on the engine. Under no...
Removal and installation of a gear belt 6-cylinder M20 engines (320i, 325e), M21 (324d/td) As part of the maintenance schedule, the toothed belt must be replaced every 4 years. If the toothed belt is...
Removing and installing, checking the chain tensioner Engine M10, M30 (models 316 and 316) pre-August 1988, 318i pre-August 1987, 323i and 325i) If there is a lot of noise from the running chain, which makes it...
Removal and installation of a head of cylinders Signs of a defective cylinder head gasket are: Reduced engine power. Low coolant level, white exhaust smoke when the engine is hot. Coolant in engine oil. The...
Removal and installation of a camshaft Withdrawal Attention: The description is only for a four-cylinder engine without a toothed belt. Remove the cylinder head and place it on 2 wooden supports,...
Removal and installation of rocker arms Particularly strong valve knocks can cause loose rocker sliders. Attention: When reinstalling the parts of the valve actuator, they must be installed in their...
Removal and installation of valves Attention: On models 316i, 318i, the exhaust valves are filled with sodium to improve heat dissipation. They cannot be smelted and used as a tool (like...
Checking the valve guides When carrying out repair work on cylinder heads with leaky valves, lapping or replacing the valves and valve seats is not enough. In addition, it is imperative...
Processing of valve seats in the cylinder head Processing of valve seats with increased wear and burning can be carried out on all engines, except for four-cylinder ones with hydraulic valve clearance...
Lapping of valves With perfectly machined valve seats and new valves installed, valve lapping is not necessary. Valves should be lapped with racing grinding paste. To ensure the...
BMW Vehicle Maintenance Schedule 3 Series Maintenance intervals on BMW vehicles are set depending on the operating conditions and are displayed to the driver on the dashboard. At the same time, there...
Prompt car service Operational maintenance is carried out every 10,000 km, but at least once a year. Under difficult operating conditions, for example, trips predominantly in the...
Scheduled maintenance Scheduled maintenance is performed every 20,000 km or at least once every 2 years. Engine and clutch Engine: oil change and full flow oil filter. Valves:...