Car Query

Top Reasons Why A Car Produces Knocking Sound

When it comes to identifying a risk for your car, the check engine light is second to none. But, there are other accurate ways to identify particular, yet critical, issues in a car.

Certain types of sounds offer more accurate identification of certain problems with a car. The knocking sound is one of them. There is a huge list of issues that can cause an engine to produce a knocking sound. Let’s have a look at these issues when your car has started making such sounds.

Carbon deposits inside the combustion chamber

The most common and simplest of problem is carbon deposit inside the combustion chamber or on other necessary components.

However, the carbon build-up usually happens, but it occurs rapidly if there are regular instances of misfire or a half hearted combustion process. The carbon usually starts to build up near pistons, across the cylinder heads. It does take place on other parts of your engine too.

An older car is more prone to such a problem and requires more frequent inspections, particularly of the cylinder. However, never ignore a knocking sound under the hood in any case and consult a mechanic at Service My Car.

Is this low engine oil level or pressure?

When there is the greatest amount of mechanical movement occurring, what happens without proper lubrication? Without a doubt! Metals will collide and crush one another, and low oil levels can lead to a number of issues. While opening a valve, there could be troublesome lifters. Timing chain issues are a possibility.

The air-to-fuel ratio would be off, and the engine would undoubtedly misfire, preventing a fair combustion process.

Furthermore, using the wrong oil can result in issues. To ensure proper flow, the viscosity of the oil must be correct. Lubrication problems arise in extremely cold temperatures when the wrong viscosity oil is in use.

Besides, a major cause of knocking is low oil pressure. As oil lubricates a huge number of parts such as a camshaft, lifters, valves, or cylinder head, the distance between parts get exposed, and there might be an occurrence of knocking.

However, you should speak with a consultant for advice. Simply head over to Service My Car.

Is there a need of fresh spark plugs?

Since an adequate spark is always required for ignition, a damaged or worn spark plug may start to default, which causes the engine to misfire.

Since the plugs aren't sparking properly and aren't burning the fuel during each revolution, these misfires can result in unburned fuel in some cylinders. This might resemble an engine knock.

Just get it checked by an expert at Service My Car and opt for spark plug replacement if needed.

Is it bad fuel supply due to improper air in the fuel mixture?

The combustion process is complete when sparks finish the ignition of the air-fuel mixture and generate the required power.

However, there might be an instance of excess oxygen in the air to fuel mixture. In such a case, there will be less fuel to burn as compared to oxygen, which usually results in multiple detonations and a knocking sound. Over a period of time, it may have detrimental effects on the internal parts of an engine.

The common causes link to engine components that regulate or control the flow of both air and fuel. Make sure the oxygen and mass airflow sensors are functioning properly, and check that the fuel injectors and pump are in working order.

Is it a damaged crankshaft or bearings?

Crankshaft facilitates motions of pistons, however, if it breaks, there would be a problem for engine process. This is quite visible inform of engine making knocking sound.

Sometimes, the connecting rod bearings may get damaged if it is not the camshaft itself. However, it happens while a vehicle is idling mostly.

Is it engine timing belt or chain issues?

As the timing chain connects the crankshaft and camshaft to allow synchronization of pistons, it also facilitates the valves open and close movement.

However, a mere default may hamper the combustion, leading to multiple explosions that result in engine knocking.

Usually, the timing chain gets loose or breaks, while sometimes they face issues with the tensioner. Though this requires a quick inspection or possibly a timing belt replacement at Service My Car.

Is it wrong fuel making things bad for your engine?

You should be aware that there are numerous fuels on the market. Different fuels have a range of octant levels, typically, they are measured in octane numbers like 87, 90, etc. However, some of them are not suitable for a certain class of vehicle, and if you fill your tank with the incorrect fuel, pressure will build up in some cylinders that aren't receiving enough oxygen, giving your engine a knocking sound.

Whatever the cause, an engine needs immediate attention. There's a good chance that your tardiness will haunt you.

The list of knocking causes above, if ignored, can result in even worse outcomes, including catastrophic engine failure, for which an entire engine replacement or rebuild is the only workable fix. If you need any type of car service & repair, service my car provides you free pickup and delivery at the nearest skoda garage center.

Service My Car is here to make your life easy while offering your car maintenance at a very affordable price. You have to just book a car service or order a car repair through our website or app.

Here’s How Do You Know That There Is a Need of Brake Rotors Replacement

Guess the critical components of your car that receives maximum friction without any lubrication. These are the rotors inside your vehicle. They play an important role in stopping your vehicle. When you press the brake pedal, the pads rub against the rotors and make it possible to slow a vehicle.

Rotors tolerate a lot of friction in this process, and as a result, they wear down too quickly. Though rotors are made of robust material, but it can tolerate friction up to a limit. However, discussion revolves around getting informed about the early signs of worn rotors. If you are able to identify these signs, changing the rotors would be easy.

The steering wheel starts to vibrate

Though the steering wheel might vibrate for a number of reasons, if it vibrates when you press the pedal, your cars’ rotors are not in good condition.

Constantly pressing the pedal generates a lot of heat. And this heat initiates the wear and tear of rotors. Once the rotors start to wear down, the effect is visible in terms of a lack of brakes and vibration, a result of pressing brake pads against a worn or uneven surface.

Therefore, it becomes important to deal with rotor problems because you would not like to deal with brake problems while driving on the road, especially in busy traffic.

Screeching around the wheels

Screeching is quite annoying, but it happens especially when there is a problem with rotors. Though the screeching sound comes intermittently, it could be severe, such as pressing nails against the metal surface.

Worn rotors usually develop a number of cuts over the surface, and brake pads make some serious noise against damaged rotors. However, you should not wait for rotor replacement when you hear such a sound more frequently.

On the other hand, brake pads also receive a lot of damage when working with worn rotors. Better come to Service My Car for a quick inspection. You can also get brake pads replacement at very low prices here.

Rotors have turned blue unintentionally

Blue might not be your favourite colour, but you have to deal with it when it comes to the rotors. If the rotors have turned blue, they are at risk of being damaged. However, the excessive heat poses a risk to the rotors. And it occurs when a driver uses the brakes excessively or drives with engaged brakes.

The problem also comes into effect when you drive into the mountain areas more frequently. Riding those slopes would not be possible without brakes, which leads to excessive rotor usage.

You can, however, perform a physical examination of the rotors surrounding the wheel spokes. Besides, you can opt for an expert assessment at Service My Car.

Extreme rotor wear and tear

Just like other depreciating components, the brake rotors go through a lot of friction regularly, which results in extreme wear and tear. However, worn rotors usually do not provide great service, which could be experienced during a drive.

You should look for grooves and other problems on the rotors. If you are unable to identify with the problems, take help from an expert. Though brake rotors might need to be replaced once your car has crossed 25,000 kilometres, this is not a standard because your car might need it way before that depending on your driving habits and area.

Your habits are definitely going to force you in making a quick assessment of the problems of your car’s brake rotors. However, if you would like to be sure about the problems, Service My Car would prove to be handy and may advise you on any brake repairs. If you need any type of car service & repair, service my car provides you free pickup and delivery at the nearest vauxhall service center.

When do brake rotors need to be replaced?

Up to 1,000,000 kilometres, a car does not require new brake rotors under normal conditions. However, it greatly depends on a person’s driving habits and the area, he or she lives in.

Hilly areas need more brake usage, while there is always a need for frequent stops. Besides, your car's brakes might be problematic if you carry a lot of weight more frequently. The quality of the parts is also vital.

However, you should be cautious when there is a need for brake pads replacement. Check for worn out rotors or seek expert help at Service My Car. However, brake pads must be replaced every 50,000 kilometres.

When you inspect the rotors, if there is not enough damage, you can go ahead and resurface the rotors. It definitely saves enough because brake rotor resurfacing costs less than replacement.

The problematic rotors often show the above mentioned signs, such as abnormal sounds, vibrations, colour changes, etc. Bad brake rotors also damage the brake pads and force you to pay more when there is always a chance of saving some money. For more advice and a quick inspection, you can come to Service My Car. You can also contact us by booking a car service or ordering a car repair on our website or app now.

Dashboard Used By

This dashboard has not been added to any menus.

Event Timeline

Bettylisa34 changed the panels on this dashboard.Apr 4 2023, 05:22
Bettylisa34 changed the panels on this dashboard.May 6 2023, 09:56