How To Make Car Engine Quieter?

The engine that produces unavoidable noises disturbs your neighbors, family, and us. We want to get rid of this problem. There are a few techniques and good quality products to control unnecessary noise. Follow the steps to avoid noises in the engine. 

How to make car engine quieter?

  • Clean your engine properly. Even dirt can cause noise or vibration. Use an engine cleaner to clean the engine dirt and grime from the engine. It can bring friction and noise to the engine.
  • Check the oil level regularly; the required oil level within the engine will help reduce the friction and noise in engine parts while moving.
  • Change the spark plugs. 
  • Use of best quality Mufflers 
  • A proper check of air filters, In old cars, there will be a need to replace a new one. 

7 ways to make the car engine quieter

The following are the methods to stop the noise of engine sound :

Use Synthetic Oil and avoid regular Oil

Synthetic oil, due to its good performance, will work efficiently. It will clean the engine well. Lubricate all parts of the engine eventually and reduce the loud noise of the engine.

Remember if you were using any other regular oil and started using synthetic oil, it will take time to settle down the system within a few days. But the result will be satisfactory.

Use of by-pass engine oil filter process

Keep changing the oil every 90 days; using a bypass oil filter will make your dual VVT-I engine quiet.

A bypass filter is called a Pressure Relief Valve

When the oil consistency becomes thick, the valve opens. If the valves do not open, the filter will burst .It will easily remove the organic and inorganic particles. 

Use additives and reduce wear on vital parts.  

Using different useful ways, we can increase the engine’s life. Do raise gas mileage, and output will be satisfactory as you expected. An example of an additive is Z Max 55-032..  

Stop sound in the engine, and the Cabin 

Use soundproof material to make your engine compartment and cabin quiet. Some mats are available that completely deafen the unnecessary sound of the engine compartment and cabin.

They are easy to fix where necessary; apply litter pressure to fix them in the engine compartment and cabin.

The use of a silencer, resonator, and exhaust muffler will help too 

Exhaust Muffler Gas 

Before the gas passes out through the exhaust , it will pass through different paths and resonating chambers due to the Muffler exhaust. This process will help to reduce noise anywhere in the engine.

Exhaust resonator 

In the exhaust system, the resonator works to cancel a certain range of sound frequency while you are driving. Resonator r reduces loud noises and sound ranges when exhaust creates regular buzz.

Universal Silencer 

It is a volumetric bulb seated at the end of an exhaust. It controls loud noises, the noise that the outflow of combustion gasses makes.

Read: Dual VVT-I Engine: More Horsepower and Fuel Economy

Why does my car engine sound so loud?

There are a few reasons why your engine sounds so loud : 


A damaged muffler obviously will make louder sounds.

Leakage of Exhaust

A leakage exhaust can cause a loss of mileage and power. You must take the Exhaust leakage problem seriously as it is dangerous due to its extremely hot gas and carbon monoxide gas.

Damage Engine bearings 

As you will notice a knocking sound under your car hood, it means your dual VVT-I engine bearings are damaged. If you do not treat the engine, your engine will size.

The engine needs oil

when you notice a rubbing or grinding sound; it means your engine is out of oil and needs oil.

Torque Converter.

In automatic transmission cars, we have a torque converter If the transmission fluid is low, the torque converter will fail. 

How can I make my old diesel engine quieter?

Diesel engines always create loud sounds as they produce great pressure and vibrations compared to gasoline engines; for diesel engines it is not possible to quiet the engine. You can reduce the loud noises.

  1. Install soundproof foam under the hood to stop the noise.
  2. There must not be a big space between your engine valves; to adjust the valves, you will need a mechanic because it is complicated to adjust them.
  3. Use professional opinions while using an oil engine for your vehicle .Recommended oil for specific engines will work.
  4. Replace damaged or worn-out window seals to reduce the noise.
  5. Use noise-reducing mats for your cabin deadening pads for inside the doors.

Best additive to quiet engine noise?

If you are still wondering how to make car engine quieter, then there are some additives to quiet engine noise: 

Seafoam SF16 

It is petroleum-based and will remove contaminants and gum from the engine. It will stop the knocking sound of the engine. It will give extra power to the engine.

Archoil AR 9100

It is awesome for diesel-engine vehicles. If you are facing problems with friction, vibrations, and loud sound. Using this oil will reduce the problem a lot. It gives new life to gearboxes and power steering.

Red Line Break in OIl contains phosphorus and zinc. 

This oil will last for a long time as compared to regular oils. Due to this oil, your dual VVT-I engine will get smooth and reduce the loud sound of the engine.

Best Line Premium  Synthetic Engine Treatment  

It will resolve the problems of friction and wear and tear issues. It will give the best fuel economy and engine performance. After using oil, you will notice the louder sounds have been controlled.

How to make your car quieter on startup?

  • You must start your car quietly when you don’t want to disturb your surroundings. 
  • Always take care of the car maintenance schedule.
  • The gas tank must be filled. 
  • Search for a quiet muffler 
  • The problem with the starter, sometimes, when you insert the key and turn the ignition, you may feel some problems and noise. it shows you need to fix the starter
  • Fix the problem with piston rings; sometimes, irritating noise is due to the piston rings. You need a mechanic to fix the mechanical issues. 

How to stop a car engine from knocking?

Engine knock or pinging happens when a separate pocket of air-fuel mixture ignites after the spark has ignited the air-fuel mixture within the combustion chamber.  

Knocking will happen when the peak of the combustion process no longer comes at the optimum moment for the four-stroke cycle. By following a few steps, you can avoid this problem : 

Always keep cleaning the combustion chamber 

You can keep your combustion chamber clean by using quality oil. Using the wrong oil will raise the gum and contaminants in your engine and will raise the loud noises. It will raise the knocking problems as well. Fuel additives are best for this.

Spark Plugs 

The engine’s spark plugs bring an electric spark that ignites the cylinder‘s fuel. These are the reasons for the knocking noises.

Regular car timings checking

Arrange the timing mark on the engine, recognize the spark plug number, and now check the engine timing. Call your mechanic to give a demo if you need any mechanical help. It will help you to adjust the timing to solve the knocking problem.

Engine noise reduction kit?

Sound down Boater’s Basic Noise Reduction Kit: 

  • This is best for reducing the noise in engine compartments.
  • It is beneficial for airborne noise pollution after proper use and application.
  • Gives you a soundproof advantage at a reasonable price.
  • With updated, highly technical advanced material.
  • It is easier to work with quality materials.
  • Kit includes Soundown foil-faced quiet-Foam Sheets.
  • Adhesive, Tape.
  • You will purchase the kit as per your requirement and availability of budget. 

Sound down Noise Reduction Mounting Kit 

  • It includes 10 pins, 10 sped washers, and 10 domed caps; use 1 fastener for each 2-3 feet of the surface.
  • Installation of speed washers 
  • Screw in fasteners 
  • Hold the speed washers and press them on fastener pins to slightly compress soundproofing. don’t compress too hard.

Read: Dual VVT-I Engine: More Horsepower and Fuel Economy


The article is about the loud, irritating, and disturbing sounds of engines that need to be fixed early to avoid extra damage to the engine. 

These loud sounds also irritate your neighbors’ families and you. Few methods have been shared to solve the problem. Proper cleaning of the engine hood and engine will save you enough. 

Proper Maintenance is also helpful to avoid the problem. Few kits are available to fix the sound-making areas of the car and engine. 

Foam sheets and mounts are available as per vehicle size and need. Different sprays are available to clean the dirt and gum. High-quality oil is available that will help your engine to stop making noisy sounds.

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