Repair of the power supply system of diesel engines of cars Volkswagen Transporter T4 1990-2003

Working principle of diesel engine
Diesel engine power system 1. Fuel filter - do not mix up the connections. The direction of the section is marked with arrows; 2. Ring; 3. Regulating valve; 4. Fuel return line...

Fuel filter heating system
In order to maintain fluidity at low outside temperatures, the fuel is heated. This is carried out by an increased supply of fuel, which is again drained through the high-pressure...

Checking and adjusting idling and speed limits
Terminal for connecting a tachometer W - terminal for connecting a tachometer Checking and adjusting the speed of a 4-cylinder engine 1. Screw for adjusting idle speed; 2. Screw...

Sealing of connecting fittings of injection pump
Removal of pipelines 1. Clean the injection lines at the injection pump fittings with a cold cleaner. 2. Unscrew the cap nuts with an open spanner, e.g. HAZET 4560. Attention! Do...

Nozzles — removal, inspection and installation
Faulty injectors can cause severe engine knocking, much like the noise of failed main bearings. In case of such a malfunction, let the engine idle and unscrew the union nuts of...

Checking the start of injection pump supply
The start of feed can be checked on the installed and removed engine. To check, a watch micrometer is required with the appropriate adapter for screwing into the pump. Piston...

Operation of machines equipped with a catalyst
VW T4 petrol engines are fitted with catalytic converters as standard. Catalyst requires engine to run exclusively on unleaded gasoline (lead free). The fuel injection system...

Turbocharging system — design description
Exhaust system and turbocharging 1. Connecting tube - with a plug for checking the boost pressure; 2. Gasket - coating (thickening) points to the intake pipe; 3. Inlet pipe - with...

Diagnosis of malfunctions of the diesel fuel injection system
Verification conditions: startup errors are excluded; the fuel tank is filled, the mechanical part of the engine is in good order, the battery is charged, the starter rotates at...

This section is available on russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian

Diesel engine fuel system VW Transporter T4