Have you ever heard a strange, rattling noise while accelerating or climbing a hill with your car? That could just be the dreaded engine knocking, a problem that is both frustrating and potentially harmful to your beloved vehicle. In this blog we delve deeper into the world of engine knocking, unraveling the causes and symptoms, and providing you with essential tips to solve and prevent this problem.
What is engine "knocking"?
Knocking can only occur with gas and petrol engines. Engine knocking can be recognized by a knocking engine. This causes self-ignition within the engine. During knocking, the fuel is not ignited by the spark plug, but by itself at an earlier stage. The combustion causes the piston to hit, resulting in pinging. If nothing is done about this, major engine damage can occur.
What are symptoms of a knocking engine?
Possible symptoms of a knocking engine include:
- Rattling sound when accelerating
- Loss of power
- Increased fuel consumption
- Irregular running of the engine
It is important to recognize in time whether there is pinging. This is to prevent possible mechanical damage to the engine.
What are possible causes for pinging?
There are a number of possible causes of engine knocking:
- Wrong type of gasoline
- Poor cooling of the engine
- Malfunctioning spark plugs
- Wrong ignition timing
- Internal contamination
Wrong type of gasoline
A common cause is the use of gasoline with too low an octane number. The recommended octane number may vary per engine. The octane number indicates to what extent the fuel is resistant to self-ignition. If the octane number is too low, self-ignition is more likely to occur. (read: engine knocking)
Poor cooling of the engine
If the engine is not cooled properly, the combustion chamber will become too hot. This logically increases the chance that the fuel will ignite itself.
This is usually due to a poorly functioning cooling system.
Malfunctioning spark plugs
When a spark plug is worn or dirty, its operation will no longer be optimal. In practice, this means that the spark produced is not always good enough, meaning that the combination of fuel and oxygen does not burn completely in the combustion chamber. This results in pinging of the engine.
Wrong ignition timing
This is a slightly more technical cause that you should probably have checked by a garage. But the timing of ignition is also mechanical or computer controlled. This can therefore be adjusted by a technician. Incorrect ignition timing can result in engine knocking.
Internal contamination
Internal pollution of the engine is something that is becoming increasingly common. It is caused by upshifting too quickly, driving too short distances and poorly maintaining the engine. For example, by using too long an oil change interval.
What can you do to prevent engine knocking?
Our motto is always “prevention is better than cure”, which also applies to engine knocking. Earlier in the blog we already discussed the possible causes of engine knocking. Based on this, three important points emerge to prevent pinging:
- Driving behavior
- Fuel quality
- Maintenance
Driving behavior
As discussed, internal contamination of the engine is a possible cause of engine knocking. Internal pollution is caused, among other things, because engines are often "squeezed" nowadays. Exhaust gases pass through the engine several times to emit as little as possible. However, the 'junk' remains behind internally.
You can prevent some of the problems by taking them into account in your driving behavior. Try to take a long highway ride every now and then, if you don't do this normally. Then the engine can just as easily “burn clean”. Furthermore, do not try to shift up too quickly at too low an engine speed. This may be economical in terms of fuel consumption, but it causes extra internal pollution.
Fuel quality
Poor fuel quality therefore causes engine knocking. Therefore, check with the manufacturer what the prescribed octane number is for your engine. In some cases, an engine requires a higher octane number than the manufacturer recommends. So be sure to test it yourself with a higher octane number by filling up with premium fuel or a octane booster to use.
Maintenance
By maintenance we mainly mean the timely replacement or cleaning of spark plugs, injectors and the rest of the engine internally.
We recommend changing the oil every 10,000 kilometers (even if the manufacturer prescribes later). Especially with the new one E10 petrol a lot of junk ends up in the engine oil, which means that a long interval is no longer sufficient these days. When changing the oil, it is smart to immediately clean the oil system with a engine flush and then to the clean oil one oil additive to add. This prevents, among other things, the contamination from easily settling and adhering to the engine.
We also recommend cleaning the injectors every 5,000 kilometers with a injector cleaner.
What can you do yourself to solve engine knocking?
While there are several ways to resolve knocking, such as checking the cooling system, replacing or cleaning spark plugs, and adjusting the ignition, there are two extremely effective solutions to consider: thoroughly cleaning the engine internally and increasing the fuel octane with Lindemann Octane Boost Pro Racing.
Internal engine cleaning
One of the most effective ways to reduce the risk of knocking is to thoroughly clean your engine internally. Carbon deposits in the combustion chamber can increase the chance of self-ignition, which can contribute to engine knocking. By cleaning the engine and fuel system properly, the engine can run cleaner, more efficiently and more powerfully.
For internal cleaning, use the right Lindemann products for the specific system you want to treat. A fuel system cleaner or injector cleaner can help clean fuel-related contamination, while an engine flush can be used during an oil change to clean the oil system internally. Follow the instructions on the product label for best results.
Lindemann Octane Boost Pro Racing
Another effective solution to knocking is to increase the octane number of your fuel with Lindemann Octane Boost Pro Racing. This powerful additive has been specially developed to increase the octane number of your fuel, reducing the risk of knocking and improving the overall performance of your engine.
Using Lindemann Octane Boost Pro Racing is as simple as adding the additive to your fuel tank according to the recommended dosage. This octane booster ensures that your engine runs smoother and more efficiently, with the added benefit of increased fuel efficiency and performance.
By choosing the right Lindemann cleaning product for internal contamination and using Lindemann Octane Boost Pro Racing when a higher octane number is needed, engine knocking can be significantly reduced or even prevented. Protect your engine and enjoy a smoother and more responsive driving experience.
If you are already convinced, you can order the product via our webshop. You can go to the webshop via the “Order Direct” button. Through the code DPPBLOG5 you will already receive a 5% discount on the product.
Questions based on this blog? Please feel free to contact us without obligation contact with us! We usually respond to an email the same day!
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