Gasoline engine fuel system VW Transporter T4

Engine power system — general information
The engine power system includes: fuel tank with activated carbon tank; fuel lines; fuel filter; fuel pump; fuel injection system with air filter. The fuel tank is located on the...

Rules for maintaining cleanliness when working with the power system
When carrying out work in the power supply system, the following rules of cleanliness must be carefully observed: before removing, thoroughly clean the joints and around; put the...

Remote control connection
Remote control is required for jobs that require fuel to be supplied by an electric fuel pump without the engine running. The following details are required: 1 button switch; 1...

Checking for voltage at the fuel pump
The fuel pump is located in the fuel tank. Check conditions: battery must be fully charged (12V), fuel filter in perfect condition. 1. Check fuse 18 for the fuel pump. Replace...

Checking the amount of fuel supply
Fuel delivery quantity diagram 1. Connect a voltmeter with additional wires to the fuel pump. Press the remote control, measure and record the measured value; about 2 V less than...

Checking the fuel pump check valve
1. Close the pressure gauge valve. 2. Switch on the remote control at short intervals until the pressure rises to 3 bar. If the pressure exceeds 3 bar, open the tap a little until...

Checking the fuel pump relay
Fuel pump relay and fuse location The fuel pump relay must be checked if the fuel pump is not working. 1. Check fuse #18 for fuel pump. Replace defective. 2. Remove the fuel pump...

Removal and installation of the fuel pump and pump sensor
Fuel pump and fuel tank gauge 1. Connecting plug; 2. Flange. Pay attention to the fuel supply and return hose on the underside; 3. Fuel return. From the fuel distributor; 4. Fuel...

Activated carbon system
Activated carbon system 1. Connecting plug; 2. Bolts, 10 Nm; 3. Magnetic valve. Synchronized. Pay attention to the installation position. The arrow indicates the direction of the...

Throttle cable
Throttle cable adjustment (4-cylinder petrol engine) 1. Throttle pipe; 2. Stopper; 3. Throttle cable; 4. Rubber bushing; 5. Gas pedal; 6. Plain bearing; 7. Stopper; 8. Gas pedal...

Cold start acceleration cable
Adjustment 4 cylinder diesel engine 1. Place the front of the machine on stands. 2. Remove the lower engine compartment mudguard. 3. Fit the washer (1) on the cable and secure the...

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