The device and the difference between engines The Audi-100 is driven by engines of various designs and numbers of cylinders. There is no shortage of their diversity. as the following table proves: Engine...
Essential elements Those who are interested in the operation of the engine will find below a brief description of the most important parts before we move on to repair work and...
Lubrication system In the engine, it is necessary to lubricate a number of bearings and friction pairs. This is the duty of the oil pump. It sucks oil from the oil pan through...
Crankcase ventilation Even a serviceable engine throws 50-70 liters of exhaust gases per minute through the piston rings into the crankcase. This pressure must escape from the...
Visual check of the engine TO №4 Examine the engine. Lightly oiled areas are not a cause for concern, all engines «sweat out» from time to time a small amount of lubricant. However, you...
Running in a new engine During the first thousand kilometers, the rubbing parts of the engine (pistons and cylinders; plain bearings and shafts) should be able to work. It is...
Engine life All Audi engines can easily overcome a mileage of 100,000 km. However, whether you can squeeze twice as much out of the engine from this run depends in the...
Rated and maximum speed An internal combustion engine reaches its maximum power at a certain speed - the so-called rated speed. A set of more revolutions does not give a gain in...
Speed limitation The absolute speed limit is approximately 6700 rpm. After this speed, the valve springs begin to compress and decompress so quickly that they no longer ensure...
Compression pressure measurement Drive a little to get the engine up to operating temperature. Piston rings seal better when the oil is warm. Switch off ignition and fuel supply. This is done...
List of faults Compression pressure too low Uniformly low compression pressure is not necessarily a sign of alarm; This may also be due to the measurement tolerances of the...
Hydraulic pushers What are hydraulic pushers for? As the engine heats up, the valve train components stretch and elongate. Therefore, there must be a small gap between the...
Toothed belt work The valves are driven, as already mentioned, by means of a toothed belt. It turns the camshaft (s) half a turn of the crankshaft. Toothed belt also drives:...
Toothed belt replacement 4-cylinder engine Remove V- or V-ribbed belts (chapter « Generator »). Remove the pulley on the crankshaft after loosening the hexagon socket bolts (not the...
Removing the camshaft This work is relatively easy to carry out on models with 4- and 5-cylinder engines. When working with a 6-cylinder engine, special tools will be needed for the...
Removal and installation of the engine Describing engine removal for all engine types would be far beyond the scope of this book. Here are just some of the essential points on this topic. The engine...