What causes engine failure and how to prevent it

Owning a car is a big responsibility. You don’t just have to worry about the cost of fuel and repairs, but also the safety of you, your passengers and everyone else on the road.

In addition to all this, you also need to be on the lookout for engine failure.

Unlike a faulty bulb, you can’t just replace the motor yourself when it starts to fail. Instead, if the engine fails, the only remedy may be an expensive and time-consuming trip to the mechanic.

In some cases, the car will become a total write-off as the cost to replace the engine is greater than the value of the vehicle.

As such, it’s essential to know what causes the engine to fail in the first place so you can prevent it from happening. So let’s give you some helpful tips to keep your engine running smoothly.

The most common causes of engine failure

The two most frequent causes of engine failure are inadequate lubrication or a faulty cooling system.

  1. Without proper lubrication, the metal parts inside the engine will rub against each other, causing premature wear. That’s why your engine needs oil.
  2. A faulty radiator or cooling system will not be able to keep the engine temperature in check, leading to overheating which can cause engine damage.
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Other contributing factors include the lack of regular vehicle maintenance and the use of lower quality engine oil or gasoline than recommended by the manufacturer.

How to prevent engine failure from happening

Engine failure can be a surprisingly common occurrence, but it doesn’t have to be if preventative measures are taken.

Most important is regular maintenance, which includes checking engine oil on time, replacing air filters and spark plugs when necessary, and keeping up with other routine tasks.

It’s also important to pay attention to any warning signs your car may give, such as strange sounds or strange vibrations.

Following the manufacturer’s suggested service schedule is also vital. If these ranges are ignored, you may run into a useless vehicle that requires complex and expensive repairs.

Finally, it is essential to use good quality fuels and lubricants. This will help ensure your vehicle performs optimally.

By taking preventative measures and addressing problems when they arise, you can reduce the chances of engine failure in the first place.

Common signs that your engine is about to fail

If your car’s engine is about to die, you may start to notice some common warning signs. One of the most telltale signs is when your car starts to have problems with acceleration.

If it takes longer than usual for the vehicle to reach the desired speed, or if it seems sluggish when trying to climb hills or accelerate, this could be due to a worn out engine.

Another sign is a rapid rise in temperature and smoke coming from the hood. This may indicate that the cooling system has stopped working properly, which means that there is too much stress on the engine, which can lead to failure.

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Also, strange noises coming from under the hood, such as knocking, popping or whining, should be taken seriously as they can indicate a number of serious problems.

Finally, if your car smells unusual – like gasoline – it’s best to see a specialist right away, as this could indicate an engine problem.

Overall, being aware of these common warning signs will help you identify when your engine is about to fail. Take appropriate action before further damage occurs.

How much does it cost to repair or replace an engine?

repairing or replacing an engine it can be tricky and expensive work which is why it should be avoided if you can.

On average, replacing an entire engine will cost between $3,000 and $4,000, depending on the vehicle make and model. If there are additional parts that need to be replaced as a result of engine damage, the costs can increase even more – up to $7,000 in some cases.

Fixing an existing engine is usually more affordable than buying a new one and costs usually range from $500 to $2500 depending on the damage.

However, if you decide to do repairs instead of replacing the entire engine, be sure to find a reputable mechanic with experience specifically in engine repairs.

Ultimately, repairing and replacing an engine can be an expensive undertaking, so it’s best to keep your vehicle serviced to avoid such extensive damage.


Engine failure is a real concern for any vehicle owner, as it can lead to costly repairs and unexpected downtime.

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Fortunately, engine failure usually has an identifiable root cause; therefore, by understanding the most common causes behind engine failure, you can be better prepared to avoid engine problems in the future.

By being aware of these potential issues and taking proactive steps, such as checking oil levels and flushing the cooling system regularly, you can help protect your engine from potentially costly repair bills.

By doing this, you can keep your vehicle in top working condition for years to come.

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