Main Reasons for Power Loss
Over time, the engine loses its efficiency and no longer delivers the horsepower it once did. Such a noticeable drop can also be due to a mechanical or long-term issue. Here are the common power loss reasons:
Fuel System Issues
Fuel-related problems directly impact the engine performance, dropping its efficiency and power:
- Choked filter: A filter prevents deposits and particles from entering the fuel pipe and reaching the engine. However, dirt and dust clog it over time, resulting in diminished engine output as sufficient fuel doesn’t get through.
- Clogged injector: Fuel injectors deliver the required fuel quantity to the engine as needed. They have narrow nozzles that are vulnerable to dirt and dust particles. If they become clogged, the injectors cannot deliver the fuel, and ultimately, the engine performance drops.
Ignition Problems
The ignition coil is one of the most critical components of your car’s engine. It enables the engine to power up and accelerate your vehicle. But once this ignition coil is damaged, the air-fuel mixture doesn’t burn properly, and you can experience rough idling and power loss.
Once the ignition coil fails, the spark plugs aren’t able to work efficiently, leading to backfiring, misfiring, and excessive fuel consumption.
Airflow Problems
An air filter works similarly to a fuel filter as it clears out the air for smooth engine movement. However, it clogs over time with dirt and dust. In such a situation, enough air doesn’t reach the engine, and the combustion cycle doesn’t work effectively. Ultimately, there is a drop in the power, and your car doesn’t pick up speed like it generally does.
Exhaust Blockages
Most of the blockages in an exhaust don’t hinder the car’s performance as they exit the vehicle during movement. But once a build-up of carbon and soot begins there, it results in back pressure, power drain, and acceleration loss. With exhaust blockage, you may notice an odd hissing or growling sound.
Transmission Issues
If you think only the engine plays a vital role in acceleration, think again. A transmission is equally important to keeping your car moving, as it harnesses the power from the engine. Due to regular wear, transmission components, like clutch plates, can deliver poor performance. The transmission slips, and the acceleration isn’t as smooth as it used to be.
Oxygen Sensor Issues
An engine is powered by igniting the air-fuel mixture, and this chemical reaction should happen smoothly to accelerate your car. For that to happen, the oxygen should remain at a precise level, which is measured by the oxygen sensor. If this sensor turns faulty, the air-fuel ratio changes, resulting in your car losing power.
Poor Spark Plug
Spark plug collects oil, carbon deposits, and similar contaminants over time, resulting in fouling. Additionally, the plug’s electrodes wear off due to regular arcing. Over time, it becomes tough for the spark plugs to perform effectively, and fuel doesn’t ignite properly inside the combustion chamber. It leads to poor acceleration and misfiring.
Defective Throttle Position Sensor
The TPS measures how strongly your car’s gas pedal is pressed so that your acceleration requirement can be matched with the air-fuel mixture. However, once this sensor begins failing, your vehicle’s computer cannot determine how strongly you are pressing the pedal. It results in inconsistent performance.
Poor Timing Chain
Your vehicle’s timing belt maintains a sync between the crankshaft and camshaft. Over time, it stretches and falters in performance. Such a problem results in decreased fuel efficiency and acceleration.
Electrical Faults
If the car's power suddenly keeps dropping, and the reasons mentioned above aren’t why it is happening, here are some of the possible electrical issues:
- Faulty turbocharger
- Poor fuel quality
- Wrong fuel station choice
- Faulty EGR valve
Common Signs
You know why your car is losing power. But how do you identify in the early stages that it is happening? Here are some of the signs to look out for:
Sluggish Acceleration
Is your car not accelerating as it should, delivering a sluggish performance? The chances are that the engine isn’t generating sufficient power and requires inspection.
Check Engine Light On
One of the first signs of an issue is the engine light on. This indicates that your engine is not working properly and needs repair. If the engine light blinks continuously, the car may need instant attention.
Strange Engine Sounds or Vibrations
Do you hear any unusual sounds from the engine, such as whining or knocking? This means that there is a problem with the engine and that it needs to be checked. In some situations, excessive vibration may be due to a faulty spark plug.
If your car is taking considerable time to accelerate, it means that there is a problem in either the fuel or air filter. This poor response can also be a result of a faulty throttle position sensor.
Reducing Fuel Economy
If you notice your vehicle’s mileage failing, it is an indicator of a faulty engine performance. Although it could be a reason for some other problem, note other symptoms to confirm it.
Overheating Issues
Running with an overheated engine can further increase damage, such as white exhaust smoke or leaked coolant. Therefore, it is necessary to check whether your vehicle’s engine is running in optimal condition.
Rough Idling
Does your car shake or vibrate when standing at a stoplight? This rough idling without acceleration means that the engine isn’t performing properly, and it is a sign that your car needs mechanical assistance.
How to Fix/Prevent
Timely action prevents expensive repairs, especially when it comes to the car’s engine. Here are the best ways you can fix the issue, or prevent it altogether:
Regular Maintenance
Get your car serviced on time. Either follow up every year, or after the car has covered every 10,000 km. You can consult the manufacturer when purchasing the car so you can get a reminder when the maintenance is due.
Check Ignition Components
If the ignition coil fails, check what is wrong with the components. This will help identify the root cause and get the car repaired accordingly. Generally, the car mechanic does a regular check-up to figure out the problem.
Inspect Exhaust System
Consult a professional at the service centre if you hear strange noises while driving the car. If acceleration consistently decreases, get the exhaust system checked.
Transmission Check
The transmission system starts performing poorly over time. That’s why regular checks are required to help maintain its performance and efficiency. You can visit your nearest mechanic or a trusted third-party expert if you think there is a transmission issue.
Use Good Fuel
Ensure that the petrol/diesel you use is not of poor quality. A good fuel addition is necessary to keep your car’s engine in optimal condition. On the other hand, one bad choice can drop the mileage over time and add to your upkeep cost.
You can also take these steps apart from the above-discussed preventative measures:
- Regularly check the coolant and oil levels.
- Check whether the air filter is clean or if there is a blockage.
- Notice the dips in your car’s accelerator power.
Most service centres check for these issues during their routine maintenance procedure. The service includes an air and fuel filter change, coolant addition, and an engine performance check.
For instance, if you book a service appointment at any of our ACKO Drive service centres, the experts will conduct a thorough inspection to determine any issues. You can also see the diagnostic report before approving the repair work. That way, you can be sure of what the problem is and what repairs have been done to your car.
Bottom Line
A car’s components wear out over time, and can impact its power and efficiency in the long run. Keep an eye out for any possible signs of engine, air/fuel filter, exhaust, and transmission defects to get them sorted without delays. Regular checking and repair by a professional can help keep your vehicle in good condition and prevent expensive service costs. So, don’t be lazy in booking your maintenance, and schedule it every year so you can drive your car smoothly for years to come.
Frequently asked questions
