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BMW 3 Series E30 car fuel injection system
Injection device L-/LE-/LU-JETRONIC, MOTRONIC
Depending on the model, BMW injection engines are equipped with fuel injection variants based on the L-Jetronic system, such as LE-Jetronic, LU-Jetronic or...
Depending on the model, BMW injection engines are equipped with fuel injection variants based on the L-Jetronic system, such as LE-Jetronic, LU-Jetronic or...
L-/LE-JETRONIC injection device
The L-/LE-Jetronic injection device is an electronic injection device for a petrol engine that provides pulsed fuel supply into the intake manifold in front of...
The L-/LE-Jetronic injection device is an electronic injection device for a petrol engine that provides pulsed fuel supply into the intake manifold in front of...
LU-JETRONIC injection device
Lambda probe (oxygen sensor) on vehicles with a regulated catalytic converter, it measures the oxygen content in the exhaust gases and transmits the...
Lambda probe (oxygen sensor) on vehicles with a regulated catalytic converter, it measures the oxygen content in the exhaust gases and transmits the...
MOTRONIC injection device
The engine speed is measured directly by an inductive speed sensor located near the flywheel. Caution: When working on the fuel injection system, it is...
The engine speed is measured directly by an inductive speed sensor located near the flywheel. Caution: When working on the fuel injection system, it is...
Rules for maintaining cleanliness when working with a fuel injection device
Thoroughly clean the connection areas and around them with gasoline. Place the removed parts on clean film or paper and cover. Do not use rags with lint! Cover...
Thoroughly clean the connection areas and around them with gasoline. Place the removed parts on clean film or paper and cover. Do not use rags with lint! Cover...
Safety rules for working with fuel injection devices
Do not start the engine if the battery is not secured. If the battery is discharged, do not start the engine using a quick battery charger. Never disconnect...
Do not start the engine if the battery is not secured. If the battery is discharged, do not start the engine using a quick battery charger. Never disconnect...
Checking the idle speed and CO content
Please note: When the Motronic system is installed, the idle speed is controlled electronically and cannot be adjusted. L-/LE-Jetronic Connect the devices for...
Please note: When the Motronic system is installed, the idle speed is controlled electronically and cannot be adjusted. L-/LE-Jetronic Connect the devices for...
Removal and installation the fuel pump
The fuel pump is located under the bottom of the vehicle near the fuel tank. Removal Disconnect the ground wire from the battery. Unscrew the electrical wires...
The fuel pump is located under the bottom of the vehicle near the fuel tank. Removal Disconnect the ground wire from the battery. Unscrew the electrical wires...
Removal and installation, checking of the starting valve
The starting valve provides additional fuel to the intake manifold during cold engine starting. Valve failure makes engine difficult to start (both cold and...
The starting valve provides additional fuel to the intake manifold during cold engine starting. Valve failure makes engine difficult to start (both cold and...
Removal and installation, checking of the thermal time switch
The thermal time switch limits the injection time of the starting valve depending on the engine temperature. A defective thermal time switch makes it difficult...
The thermal time switch limits the injection time of the starting valve depending on the engine temperature. A defective thermal time switch makes it difficult...
Removal and installation, checking of temperature sensor
Motronic, L-/LE-/LU-Jetronic The temperature sensor measures the engine temperature and transmits this information to the control unit. The temperature sensor...
Motronic, L-/LE-/LU-Jetronic The temperature sensor measures the engine temperature and transmits this information to the control unit. The temperature sensor...
Checking and replacing the additional air damper
When warming up, the engine requires more air-fuel mixture than is determined by the position of the throttle valve. To increase the supply of the mixture, a...
When warming up, the engine requires more air-fuel mixture than is determined by the position of the throttle valve. To increase the supply of the mixture, a...
Checking, adjusting and replacing throttle switches
Examination Disconnect the throttle switch connector. Connect an ohmmeter to the throttle switch contacts "2" and "18". Specified value: 0 Ohm. Give the...
Examination Disconnect the throttle switch connector. Connect an ohmmeter to the throttle switch contacts "2" and "18". Specified value: 0 Ohm. Give the...
Removal and installation the control unit
The control unit is located behind the trim in the glove compartment. Removal Disconnect the ground wire from the battery. Open the glove compartment and...
The control unit is located behind the trim in the glove compartment. Removal Disconnect the ground wire from the battery. Open the glove compartment and...
K-JETRONIC injection device
The K-Jetronic injection system is installed on BMW-318i vehicles produced before September 1983. The K-Jetronic device is a mechanical injection device for...
The K-Jetronic injection system is installed on BMW-318i vehicles produced before September 1983. The K-Jetronic device is a mechanical injection device for...
Checking the idle speed and CO content
Connect the devices for measuring the number of revolutions and CO content in accordance with their operating instructions. Warm up the engine to operating...
Connect the devices for measuring the number of revolutions and CO content in accordance with their operating instructions. Warm up the engine to operating...
Maintenance work on the fuel injection device
Replacing the air filter element The filter element should be replaced every 20,000 km. In case of heavy dustiness, replacement should be done more often....
Replacing the air filter element The filter element should be replaced every 20,000 km. In case of heavy dustiness, replacement should be done more often....
Diagnostics of injection system faults
Before troubleshooting using this diagnostic table, the following conditions must be met: eliminate driver errors when starting the engine. Do not press the...
Before troubleshooting using this diagnostic table, the following conditions must be met: eliminate driver errors when starting the engine. Do not press the...
This section is available on russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
Similar sections for other types of BMW cars:
Power unit: Fuel injection system BMW 5 Series E12 (1972-1981)
Power unit: Injection system (petrol) BMW 7 Series E32 (1986-1994)
M54 petrol engine: Injection system BMW X5 E53 (1999-2006)
Power unit: Fuel injection system BMW 5 Series E12 (1972-1981)
Power unit: Injection system (petrol) BMW 7 Series E32 (1986-1994)
M54 petrol engine: Injection system BMW X5 E53 (1999-2006)
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