If your Mercedes 190e turns over but doesn't start, there are several possible causes:
- Fuel: Check the fuel supply to the engine. Ensure there is fuel in the tank and that the fuel pump is working correctly. Also, check for any fuel leaks.
- Spark: Check the spark plugs and ensure they are properly connected and not fouled. Additionally, check the ignition coil and the distributor cap for any cracks or damage.
- Air: Check the air filter to ensure it is clean and not clogged. A dirty air filter can restrict airflow, leading to starting problems.
- Compression: Lack of compression in the engine can prevent it from starting. Check the cylinder compression to ensure it meets the specifications for your Mercedes 190e.
- Electrical: Check the battery for sufficient voltage. Corroded battery terminals or loose connections can also cause starting issues. Moreover, inspect the starter motor and ensure it is engaging properly with the flywheel.
- Engine Control Module (ECM): Problems with the ECM (also known as an engine computer) can also cause starting issues. Have the ECM diagnosed with a scan tool to check for any fault codes related to the starting system.
It's important to address the underlying cause before the vehicle will start successfully. If you are not experienced in auto repair, it may be best to consult with a qualified mechanic for a proper diagnosis and repair.
