Car Engine Starts and Then Dies

Causes

There are several reasons why a car engine might start and then die. The most common causes include:

* Fuel problems: This could be due to a clogged fuel filter, a faulty fuel pump, or a leak in the fuel system.
* Air problems: This could be due to a clogged air filter, a faulty mass air flow sensor, or a vacuum leak.
* Spark problems: This could be due to a faulty spark plug, spark plug wire, or ignition coil.
* Compression problems: This could be due to a blown head gasket, worn piston rings, or a cracked cylinder head.
* Electrical problems: This could be due to a faulty battery, alternator, or starter.

Diagnosis

If your car engine starts and then dies, you can try the following steps to diagnose the problem:

1. Check the fuel system: Inspect the fuel filter for blockages and check for fuel leaks. You can also try listening for the fuel pump running when you turn the key to the “on” position.
2. Check the air system: Inspect the air filter for blockages and check for vacuum leaks. You can do this by spraying carburetor cleaner around the intake manifold while the engine is running. If the engine speed increases, you have a vacuum leak.
3. Check the spark system: Remove a spark plug and check for spark. If there is no spark, check the spark plug wire and ignition coil.
4. Check the compression: If the engine has spark and fuel, you can check the compression by using a compression tester. The compression should be between 100 and 150 psi on most engines.
5. Check the electrical system: Check the battery voltage and make sure the alternator is charging the battery. You can also check the starter for proper operation.

Repair

Once you have diagnosed the problem, you can repair it accordingly. Some repairs, such as replacing a fuel filter or spark plug, are relatively simple and can be done at home. Others, such as repairing a blown head gasket, are more complex and should be done by a qualified mechanic.

Prevention

There are several things you can do to prevent your car engine from starting and then dying, including:

* Regularly change the fuel filter and air filter.
* Inspect the spark plugs and spark plug wires for wear and replace them as needed.
* Check the battery and alternator regularly and replace them as needed.
* Have your car serviced by a qualified mechanic according to the manufacturer’s recommendations.

By following these tips, you can help to keep your car running smoothly and avoid the inconvenience of having it start and then die.