Car Shakes When Start Engine Light On
Introduction
When you start your car and the engine light comes on, it can be a worrying experience. One of the most common symptoms of a car shaking when the start engine light is on is a misfire. This can be caused by a number of factors, including:
- Faulty spark plugs
- Worn out ignition coils
- Vacuum leaks
- Fuel injector problems
Causes of Car Shaking When Start Engine Light On
Faulty Spark Plugs
Spark plugs are responsible for igniting the air-fuel mixture in your engine’s cylinders. If they are faulty, they can cause the engine to misfire, which can lead to shaking.
Worn Out Ignition Coils
Ignition coils provide the spark plugs with the electricity they need to ignite the air-fuel mixture. If they are worn out, they can cause the engine to misfire, which can lead to shaking.
Vacuum Leaks
Vacuum leaks can cause the engine to run lean, which can lead to misfiring. This can be caused by a number of factors, including:
- Cracked or damaged vacuum hoses
- Loose vacuum connections
- Faulty vacuum valves
Fuel Injector Problems
Fuel injectors are responsible for delivering fuel to the engine’s cylinders. If they are clogged or faulty, they can cause the engine to misfire, which can lead to shaking.
Diagnosis
If your car is shaking when the start engine light is on, it is important to have it diagnosed by a qualified mechanic. The mechanic will be able to determine the cause of the problem and recommend the appropriate repairs.
Repair
The repair for a car shaking when the start engine light is on will depend on the cause of the problem. In some cases, the repair may be as simple as replacing the spark plugs or ignition coils. In other cases, the repair may be more complex, such as repairing a vacuum leak or replacing a fuel injector.
Prevention
There are a few things you can do to help prevent your car from shaking when the start engine light is on:
- Regularly maintain your car and have it serviced by a qualified mechanic.
- Replace your spark plugs and ignition coils according to the manufacturer’s recommended schedule.
- Inspect your vacuum hoses and connections for cracks or damage.
- Have your fuel injectors cleaned or replaced if you experience any problems with your car’s performance.
Conclusion
If your car is shaking when the start engine light is on, it is important to have it diagnosed by a qualified mechanic. The mechanic will be able to determine the cause of the problem and recommend the appropriate repairs.
