Passat B2 (1981-1988)
Passat B3 (1988-1993)
Passat B4 (1988-1996)
Passat B5 (1996-2005)
Passat B6 (2005-2010)
Fuel injection «K-Jetronic» car Volkswagen Passat B4
Fuel injection system «K-Jetronic»
Model engine «KR «equipped with a mechanical constant fuel injection system «K-Jetronic» Bosch company. The operation of the engine at idle and forced idle is controlled by a...
Model engine «KR «equipped with a mechanical constant fuel injection system «K-Jetronic» Bosch company. The operation of the engine at idle and forced idle is controlled by a...
The design of some devices of the injection system
Below is the arrangement of some elements of the engine fuel injection system «KR». Pic. 2-159. Components of the fuel injection system «K-Jetronlc» engine «KR»: 1 - mixture...
Below is the arrangement of some elements of the engine fuel injection system «KR». Pic. 2-159. Components of the fuel injection system «K-Jetronlc» engine «KR»: 1 - mixture...
Work in different modes
Work on load modes The fuel electric pump takes fuel from the fuel tank and pumps it under a pressure of about 5 kgf/cm 2 into the dispenser through the fuel filter and pressure...
Work on load modes The fuel electric pump takes fuel from the fuel tank and pumps it under a pressure of about 5 kgf/cm 2 into the dispenser through the fuel filter and pressure...
The location of the elements of the fuel injection system «K-Jetronic» and ignition systems
Pic. 2-175. The location of the elements of the fuel injection system «K-Jetronic» and ignition systems in the engine compartment: 1 - throttle position sensor; 2 - switch of the...
Pic. 2-175. The location of the elements of the fuel injection system «K-Jetronic» and ignition systems in the engine compartment: 1 - throttle position sensor; 2 - switch of the...
Engine idle adjustment
Before adjusting the engine idle, perform the following operations: warm up the engine (oil temperature not less than 80X); check and, if necessary, adjust the gaps between the...
Before adjusting the engine idle, perform the following operations: warm up the engine (oil temperature not less than 80X); check and, if necessary, adjust the gaps between the...
Throttle valve adjustment
Note. The throttle valve opening is set at the factory and cannot be changed during operation. However, if the stop screw is accidentally turned, the adjustment is restored as...
Note. The throttle valve opening is set at the factory and cannot be changed during operation. However, if the stop screw is accidentally turned, the adjustment is restored as...
Throttle cable adjustment
Carefully check that there are no bent or twisted sections on the cable. Press the accelerator pedal all the way down and measure the gap between the throttle control lever and...
Carefully check that there are no bent or twisted sections on the cable. Press the accelerator pedal all the way down and measure the gap between the throttle control lever and...
Checking the performance of the fuel pump
Relieve pressure in the fuel injection system by disconnecting the control pressure supply hose from the fuel pressure regulator fitting. Disconnect the fuel drain hose from the...
Relieve pressure in the fuel injection system by disconnecting the control pressure supply hose from the fuel pressure regulator fitting. Disconnect the fuel drain hose from the...
Checking the air flow meter
Remove the air supply cap from the air flow meter. Crank the engine crankshaft with the starter for 10 s. Move the pressure disk of the air flow meter to the full upwards with a...
Remove the air supply cap from the air flow meter. Crank the engine crankshaft with the starter for 10 s. Move the pressure disk of the air flow meter to the full upwards with a...
Adjusting the position of the pressure plate of the air flow meter
Remove the air supply cap from the air flow meter. Make sure that with the engine off, the pressure disk is at the same level or no more than 0.5 mm below the beginning of the...
Remove the air supply cap from the air flow meter. Make sure that with the engine off, the pressure disk is at the same level or no more than 0.5 mm below the beginning of the...
Pressure test
The pressure is checked using a manometer with a fitting and a cock that measures both the flow pressure and the inlet pressure. Connect the manometer hoses between the...
The pressure is checked using a manometer with a fitting and a cock that measures both the flow pressure and the inlet pressure. Connect the manometer hoses between the...
Checking the fuel pressure in the system
Check the performance of the fuel pump and the condition of the air filter element. Set the pressure gauge valve to position «open» (for measuring fuel pressure in front of the...
Check the performance of the fuel pump and the condition of the air filter element. Set the pressure gauge valve to position «open» (for measuring fuel pressure in front of the...
Adjusting the fuel pressure in the system
Remove the fuel pressure regulator from the fuel dispenser. Check the condition of the sealing rings 1 (pic. 2-185) and replace them if necessary. The fuel pressure in the system...
Remove the fuel pressure regulator from the fuel dispenser. Check the condition of the sealing rings 1 (pic. 2-185) and replace them if necessary. The fuel pressure in the system...
Checking the control pressure on a cold engine
This check is carried out on a cold engine at a coolant temperature of 20-30°C. Disconnect the pilot pressure regulator connector. Open the manometer cock. Start the engine at...
This check is carried out on a cold engine at a coolant temperature of 20-30°C. Disconnect the pilot pressure regulator connector. Open the manometer cock. Start the engine at...
Checking the control pressure on a warm engine
Warm up the engine to normal operating temperature. Disconnect the pilot pressure regulator connector. Run the engine at idle and connect the control pressure regulator connector....
Warm up the engine to normal operating temperature. Disconnect the pilot pressure regulator connector. Run the engine at idle and connect the control pressure regulator connector....
Checking Residual Fuel Pressure
Warm up the engine to operating temperature and stop it. Connect pressure gauge as above. Start the engine at idle and let it run until the required fuel pressure of 3.4-3.8...
Warm up the engine to operating temperature and stop it. Connect pressure gauge as above. Start the engine at idle and let it run until the required fuel pressure of 3.4-3.8...
Checking the fuel pressure in the system when the engine is stopped
Warm up and stop the engine. Connect pressure gauge as above. Start the engine and set the pressure gauge valve to position «Closed». Measure the fuel pressure, turn off the...
Warm up and stop the engine. Connect pressure gauge as above. Start the engine and set the pressure gauge valve to position «Closed». Measure the fuel pressure, turn off the...
Checking and adjusting the throttle position sensor
Examination Disconnect the throttle position sensor connector and check the resistance between the terminals of the sensor block (pic. 2-186) as shown in Table 2-29. Adjustment...
Examination Disconnect the throttle position sensor connector and check the resistance between the terminals of the sensor block (pic. 2-186) as shown in Table 2-29. Adjustment...
Checking the tightness of the injectors and the uniformity of fuel injection
Disconnect the wire from the negative battery terminal. Remove the nozzles and place each of them in a beaker. Remove the fuel pump enable relay and connect the output with a...
Disconnect the wire from the negative battery terminal. Remove the nozzles and place each of them in a beaker. Remove the fuel pump enable relay and connect the output with a...
Checking the starter injector
Checking the starting injector is carried out on a cold engine. To check injection duration: disconnect the connectors of the control pressure regulator and the idle speed...
Checking the starting injector is carried out on a cold engine. To check injection duration: disconnect the connectors of the control pressure regulator and the idle speed...
Checking the thermal timer
Disconnect the high voltage wire from the ignition distributor and connect it to «weight» body through an extension. Remove the thermal time relay from the engine and immerse its...
Disconnect the high voltage wire from the ignition distributor and connect it to «weight» body through an extension. Remove the thermal time relay from the engine and immerse its...
Pilot pressure regulator test
Warm up the engine to operating temperature. Disconnect the control pressure regulator connector and connect a voltmeter to the regulator block. Turn on the ignition and use a...
Warm up the engine to operating temperature. Disconnect the control pressure regulator connector and connect a voltmeter to the regulator block. Turn on the ignition and use a...
Check of the valve of stabilization of idling
Turn on the ignition. In this case, the idle speed stabilization valve should make a vibrating sound. Disconnect the valve connector and connect an ohmmeter to the terminals of...
Turn on the ignition. In this case, the idle speed stabilization valve should make a vibrating sound. Disconnect the valve connector and connect an ohmmeter to the terminals of...
Checking the coolant temperature sensor
Disconnect the sensor connector. Check coolant temperature. Connect an ohmmeter to the terminal and sensor housing (pic. 2-193) and check the compliance of its readings with the...
Disconnect the sensor connector. Check coolant temperature. Connect an ohmmeter to the terminal and sensor housing (pic. 2-193) and check the compliance of its readings with the...
Checking the enrichment of the mixture during acceleration with a cold engine
Make sure the starting injector is working. Disconnect the connector from the starting injector and attach a test lamp to the terminals of the injector block. Disconnect the...
Make sure the starting injector is working. Disconnect the connector from the starting injector and attach a test lamp to the terminals of the injector block. Disconnect the...
Checking the fuel cut during engine braking
Make sure the vacuum hose going to the PID valve is in good condition. Warm up the engine to normal operating temperature. then increase the crankshaft speed to 2500 rpm. When the...
Make sure the vacuum hose going to the PID valve is in good condition. Warm up the engine to normal operating temperature. then increase the crankshaft speed to 2500 rpm. When the...
Removal and installation of the block of the batcher-distributor with an air flow meter
To remove, relieve pressure in the fuel injection line by disconnecting the hose from the control pressure fitting on the fuel pressure regulator. Disconnect the injector fuel...
To remove, relieve pressure in the fuel injection line by disconnecting the hose from the control pressure fitting on the fuel pressure regulator. Disconnect the injector fuel...
Removal and installation of nozzles
Release the fuel injector lines from the holders. Remove the flange securing the injectors to the engine. Remove injectors with fuel lines. Unscrew the pipe fitting from the...
Release the fuel injector lines from the holders. Remove the flange securing the injectors to the engine. Remove injectors with fuel lines. Unscrew the pipe fitting from the...
Engine ignition system «KR»
The ignition system is fully electronic (pic. 2-196). Pic. 2-196. Details of the engine ignition system «KR»: 1 - electronic ignition timing control unit; 2 - connecting block of...
The ignition system is fully electronic (pic. 2-196). Pic. 2-196. Details of the engine ignition system «KR»: 1 - electronic ignition timing control unit; 2 - connecting block of...
Removal and installation of the distributor of ignition
To remove, disconnect the cable from the negative battery terminal. Disconnect the spark plug wires and ignition coil wire from the ignition distributor. Remove the ignition...
To remove, disconnect the cable from the negative battery terminal. Disconnect the spark plug wires and ignition coil wire from the ignition distributor. Remove the ignition...
Setting the initial ignition timing
Warm up the engine (oil temperature not less than 80°С). Verify that the throttle position sensor is properly adjusted (see above), and also that the idle speed and carbon...
Warm up the engine (oil temperature not less than 80°С). Verify that the throttle position sensor is properly adjusted (see above), and also that the idle speed and carbon...
Checking automatic ignition timing
To check ignition timing as a function of engine speed: warm up the engine to operating temperature and stop it; connect the control tachometer and stroboscope in accordance with...
To check ignition timing as a function of engine speed: warm up the engine to operating temperature and stop it; connect the control tachometer and stroboscope in accordance with...
Checking and adjusting the fuel injection system «KE-Jetronic» engine «PL»
Pic. 21. The electrical circuit of the fuel injection control subsystem KSUD «Motronic» engine «AAA» car «Passat 2,8 VR6»: 1 - controller; 2/1-6 - nozzles: 3 - power relay; 4 -...
Pic. 21. The electrical circuit of the fuel injection control subsystem KSUD «Motronic» engine «AAA» car «Passat 2,8 VR6»: 1 - controller; 2/1-6 - nozzles: 3 - power relay; 4 -...
Possible malfunctions of the fuel injection system «KE-Jetronic» engine «PL»
Possible malfunctions of the fuel injection system «KE-Jetronic» engine «PL», their causes and methods of elimination.
Possible malfunctions of the fuel injection system «KE-Jetronic» engine «PL», their causes and methods of elimination.
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