Vehicle diesel fuel system Audi 80 B4

How a diesel engine works
Unlike a petrol engine, which receives a ready-made air-fuel mixture into the combustion chambers, a diesel engine only sucks in air during the intake stroke....

Fuel system of diesel engines TD Distribution fuel injection pump — operating principle
After air is admitted to the combustion chambers, it is compressed to 28-34 bar and only at this point is fuel injected. Naturally, injection can be carried...

Cold engine start accelerator
The cold start accelerator is sometimes compared to the choke control handle. However, this is not true. Although you have to pull the accelerator handle when...

Valve injectors
Valve injectors are the final component of the fuel system of diesel engines. They are designed to inject fuel into the swirl chamber with its simultaneous...

Power supply system — repair
Below are the types of repair work related to the fuel system of a diesel engine, available to a car enthusiast. This list may be wider, for example, to...

Start of injection pump feed — adjustment
Adjustment of the injection pump feed start must be performed, for example, after work during which the toothed belt was removed. For adjustment, a special...

Accelerator cable — removal and adjustment
Removal The accelerator cable is very sensitive to bending. If it is carelessly placed at the wrong angle when removed, only this can lead to a defect. A kind...

Cold Start Accelerator Cable — Removal and Adjustment
If the cold engine accelerator cable breaks, it does not cause any particular problem. At low temperatures, a cold engine starts without using the accelerator....

Idle speed — check
The devices available to the car enthusiast for measuring the number of revolutions are of little use for precise adjustment. In this case, special control and...

Power supply system — TDI diesel engines
General description Unlike a diesel engine with swirl chamber fuel injection, TD1 engines have direct injection regulated by an electronic control unit. It is...

Sensors of the fuel system of diesel engines TDI
Accelerator Pedal Position Sensor TDI engines do not have an accelerator cable. The potentiometer transmits information about the accelerator pedal position to...

Fuel injection system of TDI engines — check
The electronic control unit of the fuel injection system of TDI engines can recognize and register 21 faults of the injection and engine heating system...

TD Engine Preheating System
Each engine type of AUDI 80 cars has its own preheating system. The TD engine preheating system consists of the following main parts: a) glow plug relay. The...

TD Engine Preheating System — Check
Glow Plugs - Checking The fact that one of the glow plugs is faulty is usually noticeable when starting a cold engine. All cylinders with working glow plugs...

TDI engine preheating system
Due to the design features of direct injection engines, preheating has its own differences. These engines start without preheating at temperatures below 0°C....

TDI Engine Preheating System — Check
A defect in the TDI engine preheating system is only noticeable at temperatures below -10°C, because it is difficult to start. A defect in the engine...

Turbocharger
The process of preparing and burning the air-fuel mixture in the combustion chambers of a diesel engine is quite long compared to a gasoline engine. For this...

Turbocharger — removal and installation
When working on the turbocharger, it is necessary to maintain the strictest cleanliness. Clean all removed parts thoroughly and place them on a clean lining....

Charge air cooler
The air entering through the air filter is accelerated and compressed in the turbocharger. The compression of the air, as well as the fact that the...

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80(B4, 1991-1996)

80(B3, 1986-1991)

80(B3, 1986-1991, petrol)

80(B2, 1979-1986)