Last Updated on January 9, 2023 by Bernard Juchli
Will new spark plugs improve performance? It’s not a secret that the way a car performs depends on maintenance. Making ensure the engine is operating as effectively as possible is one of the most important components of maintenance. This entails maintaining the condition of each component, including the spark plugs.
Functional spark plugs can also considerably enhance cold starting. Having a sufficient supply of spark plugs in your car will reduce the voltage demands on the ignition system, lowering the risk of a misfire and freeing up more amps for the starter and injectors.
What are spark plugs and how do they work?
Spark plugs are important for any engine that uses fuel as the engine is powered by these plugs by igniting the air/fuel combination in the cylinders. The electrical current that flows from the ignition system to the spark plugs is carried through the wires.
If your engine misfires or run rough due to worn-out spark plugs and wires over time, you just need to replace them.
The electrode and tip of a spark plug are separated by a tiny gap, and they are commonly constructed of copper or platinum. The amount of voltage needed to ignite depends on the magnitude of this gap. An engine’s air/fuel combination will be ignited by a hot spark produced by properly functioning spark plugs.
Will new spark plugs improve performance?
Yes. A new spark plug will greatly improve a car’s engine performance. To guarantee that your car can safely transport you to another location without issues, consider changing your old spark plugs to new ones when they begin to show signs of wear and tear.
Here are the advantages of new spark plugs:
a. Fuel efficiency
Every car will encounter faulty ignition at some point during the ignition procedure. The length of time is inversely correlated with the quantity and frequency of defective ignitions, which results in an increasing number of vehicle issues, particularly concerning fuel consumption.
Per the National Institute for Automotive Service Excellence cited on Investopedia, faulty spark plugs raise the possibility of mis-ignition, which reduces fuel efficiency by 30%.
Additionally, a worn component will cost the motorist much in terms of routine maintenance and gasoline. Therefore, new replacement is unquestionably the best strategy for enhancing fuel economy and energy efficiency.
b. Enhance combustion engines
The fuel-air combination within the combustion chamber of the car is ignited by the spark plug.
To ignite and sustain vehicle functioning, worn-out parts need a greater voltage than usual. Additionally, it increases the likelihood that your car may stall, start slowly, warp, and lose balance. So, after being replaced, will new spark plugs increase performance?
Yes! Having new spark plugs allows your car to start whenever you want. The new component uses less voltage than the ignition system and produces more amps (for injectors and starters), which improves the efficiency of the combustion engine.
c. Smooth start-up process
Vehicle performance will noticeably suffer as the spark plugs deteriorate, particularly while idling, with sluggish acceleration, and engine misfire.
The gap widens with increased spark plug wear, which results in inconsistent combustion. This interruption leads to improper ignition, which is the main culprit behind the aforementioned engine issues. Meanwhile, with a new spark plug, this won’t happen anymore and there will be a smooth start-up vehicle performance.
d. Reduced carbon emissions
The engine is under extreme pressure from clogged spark plugs, which can lead to an expanding gap and the release of dangerous exhaust gases.
The improved and new spark plug installation, on the other hand, restricts the gap, perhaps minimizing lost energy and greatly lowering harmful emissions.
According to research from the Environmental Protection Agency, drivers should frequently service their vehicles to avoid worn spark plugs and improve global air quality, particularly in areas with heavy traffic.
e. Enhanced horsepower
New spark plugs will surely increase a car’s horsepower. The effectiveness of a car’s horsepower is measured in the response speed of the engine when driving.
Technically, the new spark plugs don’t increase the engine’s power; rather, they encourage optimal combustion. It makes the engine reaction speed as quick as new and aids the driver in controlling the vehicle’s best acceleration.
How often should I change my spark plugs?
The length of time between replacements will depend on the type of spark plug and how well your car is maintained. The conventional type and the long-life type are two spark plugs that are often used by drivers.
A long-life product can last up to 100,000 miles or even longer than the typical product life of 30,000 to 50,000 (or even 60,000) miles.
Since the service time varies on the maintenance method, the figures supplied above are unreliable. Spark plugs will survive longer in a vehicle moving on level ground and with routine maintenance than those functioning in the rain without such maintenance.
What is the cost of replacing spark plugs?
The majority of auto manufacturers advise swapping out spark plugs and wires every 30,000 to 50,000 miles. The cost of spark plugs and wire replacements, however, might vary depending on the engine type, driving style, and weather.
It’s a good idea to get your spark plugs and wires examined by a professional if you’re unsure of when you last checked and changed them.
Although changing spark plugs and wires is a very simple procedure, it may take some time, which is why many people choose to hire a professional to carry it out. Depending on the make and model of your car, changing spark plugs and wires might cost anywhere between $100 and $200. Therefore, while evaluating whether or not new spark plugs and wires would increase performance, it’s crucial to take the cost of replacement into account.
In most circumstances, changing your spark plugs and wires will result in a significant performance change. The car will accelerate more quickly and smoothly, and the engine will operate more quickly.
How to replace spark plugs in my car
For a four-cylinder engine, replacing cylinders at home is difficult and takes an hour. Fortunately, you will be able to save at least $100 over having your car serviced at a shop.
In addition to getting ready a new spark plug, make sure you have the following equipment:
- Gap gauge
- Needle-nose pliers
- Dielectric grease
- Spark plug wire puller
- Torque wrench
- Ratchet or socket set
- Anti-seize compound
- Swivel socket
1. Open and clean
Remove the engine’s plastic cover and air filter assembly. Label any removed vacuum tubes so they can be installed again in the future.
Dirt can be kept out of the cylinder by blowing compressed air around the ignition coils. After that, keep blowing any remaining debris away from the engine.
2. Remove the ignition coil
To remove the ignition coil, press on the locking tab to unplug it from the vehicle’s electrical system and then take the connection away from the coil.
Pull out the starting component and the complete coil after removing the holding pin. This procedure will be made simpler by certain car types, needle nose pliers, and other spark plug wire equipment.
3. Unscrew the plug
After clearing the area surrounding the plug of any dirt, turn the plug counterclockwise in a spark plug socket that is the right size to access it. Ensure you use spark plug sockets with swivel heads to ease your difficulty.
4. Gap the plugs
Remove all plugs and ensure you check the spark plug clearance before installation. The gap gauge (or wire gauge) should then be inserted into the space between the electrodes.
If this gap is too tiny, you must use a gap measure to make it larger before prying the area up. It is advisable to lightly tap the electrode on a firm surface to gradually reduce a big area.
The plug should then be threaded into the cylinder head after being treated with the anti-seize chemical.
5. Install the new plug
You need to use the proper torque wrench under the manufacturer’s recommendations. The plug will come out of the cylinder head if there is not enough torque, and if there is too much torque, the plug will deform.
To get the optimum results after applying an anti-jamming compound to the plug threads, it is preferable to lower the torque by 10%.
6. Lube and button the spark plug to boot up
To reduce the possibility of mis-ignition and make future repairs easier, apply a thin coating of dielectric grease around your spark plugs. Reassemble the complete system, including the vanity cap, electrical connection, ignition coil, and holding pin.
The most important thing to ensure your car’s performance on the road is regular maintenance, including changing your car’s spark plug.
Along with routine component maintenance, you must frequently inspect to spot dangers early and replace worn-out parts to keep engine performance at the appropriate level. Ultimately, getting new spark plugs will increase performance. You can go as far as installing them yourself or contacting a technician.