The engine is the beating heart of the car; it gives the necessary strength for proper performance and keeps the vehicle in good condition. However, this critical part is not always invincible! With less maintenance, the engine will be damaged and directly affect your vehicle’s performance. Fortunately, this can be easily avoided by giving the engine the attention that it needs and regular inspections from time to time.

In this month’s blog, we will discuss some of the most critical signs of car engine damage that require checking and repairing as soon as possible.

Check Engine Light

There are many different engine problems and malfunctions that can cause the check engine light to light up. The most important of which are:

  • There is a malfunction in the oxygen sensor and it needs to be replaced.
  • The adapter is damaged and it needs to be replaced.
  • The fuel cap is loose, and fortunately, it’s an easy problem to fix.

Knocking Noise

This often occurs as a result of damage to mechanical parts in the engine, such as the pistons or other moving parts that stop working. Your car in this case, will likely require a massive engine repair or possibly even an engine replacement.

Thick Exhaust Smoke

Whether it’s a thick gray, blue or black smoke, a colorful smoke usually indicates that there is something wrong with the engine that requires treatment as quickly as possible. This can include a malfunction in the fuel injector, sensors, air filter, a blockage in the fuel passage, or mechanical damage to the engine.

High Fuel Consumption

If you’re noticing that you are filling up your car’s gas tank more often than normal, chances are there is a malfunction in the engine. This sign indicates that the components that process the car fuel inside the engine are damaged, and this problem is usually also indicated with a check engine light.

The best thing you can do to notice this problem quickly is to keep track of how many miles you get per gallon. You don’t need to track it with exact numbers, but a general idea is enough to know when it’s time for a new engine or checkup.


Many car owners may eventually need to change the engines of their cars due to minor or major problems that might occur and affect the vehicle. Changing the car engine is one of the most challenging tasks that a mechanic may face because the process of repairing the engine requires knowledge of different techniques. When you need a professional diagnosis or repair of your car’s engine, you can rely on H.W. Automotive Inc – the most trusted name in the Oklahoma area. Learn more about our services and our seasoned team by visiting our website or by calling (405) 702-4098.