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Why your car will not start when the ignition switch is turned on

Many drivers often experience the situation where they insert their car key into the ignition switch, turn it on several times, only to be disappointed because their car won’t start, but the real fact is that cars are machines with many components that can get damaged, worn out, or develop one problem after another, and can cause a car not to start, especially when they are faulty. However, in this article, I want to briefly discuss nine reasons your car won’t start when the ignition switch is turned on.

1. Flat, faulty or dead battery.

According to Mechanicbase.com, The battery’s usually the main culprit behind issues with starting your car. car makes a rapid clicking sound when you turn the key but won’t start, it could be the battery. A jump start might get you going again, but you may need to replace the battery or have a mechanic check it for problems and corrosion. Battery problems are particularly likely to happen in cold weather, when the battery gets cold and struggles to hold its charge.

2. Faulty starter.

A broken starter is another common reason your car won’t start. A starter is an electrical motor that is connected to the battery. Its role is to set the engine (i.e. pistons, crankshaft, etc.) in motion when you turn the ignition switch on. Once the engine starts and is in motion, the starter’s job is complete. starter goes bad, the engine will not crank properly or may not crank at all when you turn the ignition key on.

3. Clogged fuel filter.

The fuel filter keeps debris from getting into your car’s fuel system. When this filter is clogged, it can prevent enough fuel from reaching the engine. A replacement is usually needed if this is the problem. And to keep your fuel filter from clogging in the future, try to change it every two years or 30,000 miles (whichever comes first).

4. The alternator is bad. 

If you can start the car but it stalls or you’re experiencing interior lights that start out bright and then dim, the alternator could be the culprit. The battery symbol may also appear on the dashboard, and you may even notice a burning smell since the alternator works with belts. There’s no quick fix, so you’ll want an expert to take a look. If it’s bad, it might have also damaged the battery.

5. Faulty Ignition.

When you turn the key in the ignition, you create an electrical pathway that gets your car running. If that pathway is not being completed due to an ignition switch issue, the car will crank but not fire—that is, if the key will turn at all.

6. The car is in gear.

When dealing with a car that won’t start, the first troubleshooting step you must take is to check that your vehicle isn’t in gear. Don’t laugh; we all forget some things at some point. Cars have a safety feature that prevents them from starting when they’re in gear. That makes a lot of sense, since starting a car that’s in gear could send the car flying forward, causing property damage, injuries, or much worse.

7. Spark plugs.

If your car won’t start, it’s possible that its spark plugs are old or dirty. Spark plugs that have become defective in any way can lead to reduced gas mileage, lack of acceleration, engine troubles like misfires, and yes, even difficulty starting your car at all.

8. Faulty Fuse.

Car fuses are components that protect the electrical wiring in your car or any vehicle. And if that’s faulty or the fusible links are damaged, your car won’t start. A damaged or blown fuse can prevent power from reaching the starter relay, which is needed to provide the spark, the ignition, and the power to move your vehicle. 


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