LE-Jetronik Fuel Injection System — Design Description Schematic of the LE-Jetronik system: 1. Fuel tank; 2. Electric fuel pump; 3. Fuel filter; 4. Distribution fuel line; 5. Pressure regulator; 6. Control device;...
Idle speed adjustment Warm up the engine The oil temperature must be at least 60°C. Connect tachometer. Attention! Observe the safety instructions for the TSZ-H system, see point...
Checking and adjusting the CO content Warm up the engine to an oil temperature of 60°C. Connect tachometer and CO tester. Attention! Observe the precautions for handling the TSZ-H device. Check...
Checking the control relay The control relay is located on the suspension strut stop next to the battery. Disconnect the plug from the control relay. Connect the control pump to...
Checking the performance of the fuel pump Disconnect the supply line, marked with a blue ring, from the distribution line and lower the end of the hose into a 5 l container. Disconnect the plug from...
Removal and installation of the fuel pump The fuel pump is located at the rear, under the trunk, on the right, next to the spare wheel well. Removing Disconnect the earth cable from the battery....
Fuel filter replacement Replace the filter every 2 years or 40,000 km. Remove fuel lines. To prevent fuel from escaping, pre-clamp the hoses with clamps or plug them with screws of...
Checking, removing and adjusting the air flow meter Examination Switch off the ignition. Disconnect the plug from the control relay. Using an ohmmeter, measure the resistance between terminals 8 and 9 of the...
Checking and replacing the secondary air spool Examination Disconnect the plug from the spool (arrow right, bottom). Connect a test lamp to the plug contact (12V/2W). Start the engine. The lamp should light...
Filter element replacement Removing Open the filter cover clips. Remove the air flow meter from the top of the filter. Take out the filter element. Clean the filter housing. Installation...
Fuel level sensor replacement Removing Attention! Fire hazard. Do not use open fire. Drain the fuel by pumping it out through the filler hole in the tank. Disconnect the cable from the...
Malfunctions of the LE-Jetronik fuel injection system Before looking for the cause of the malfunction according to the table, you need to check the start of the engine, both cold and hot: slightly press and hold...