Spark plugs

What happens if spark plugs are not properly installed?
Experienced mechanics share their insights in answering this question :
Installing a spark plug incorrect is most likely caused by the gap of the plug is incorrect or hit when installing it closing the gap. The spark plug may also get cracked when installing the plug. After any of these mishaps with the spark plugs you will have a bad engine misfire, hard start, hesitations and jerks and the check engine light will come on. A mechanic like one from YourMechanic can come to you and perform a spark plug change or most any kind of maintenance work you need.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

spark plug, also called Sparking Plug, device that fits into the cylinder head of an internal-combustion engine and carries two electrodes separated by an air gap, across which current from a high-tension ignition system discharges, to form a spark for igniting the air–fuel mixture.
The ignition coil transforms low voltage from your car battery into high voltage. The spark plug takes the spark created by the coil to ignite the fuel in your engine.
The spark plug has two primary functions: (1) To ignite the air/fuel mixture. Electrical energy is transmitted through the spark plug, jumping the gap in the plugs firing end if the voltage supplied to the plug is high enough. This electrical spark ignites the gasoline/air mixture in the combustion chamber.
There are three basic types of automotive ignition systems: distributor-based, distributor-less, and coil-on-plug (COP). Early ignition systems used fully mechanical distributors to deliver the spark at the right time. Next came more reliable distributors equipped with solid-state switches and ignition control modules.
Most spark plugs used today feature a single-ceramic insulator made from aluminium oxide, with other types of ceramic materials like porcelain used in the past. This provides many benefits, including thermal conductivity and superior insulation.
Nowadays there are different kinds of spark plugs available in the markets to choose from i.e. copper, platinum and Iridium spark plugs. The copper spark plug is the most commonly used spark plug as it is the cheapest among the three.
The ignition system`s job is to ignite the air-fuel mixture in a gasoline engine. In addition to the spark plugs that spark in the combustion chambers, the ignition system consists of an ignition coil, which converts battery voltage to higher voltage, and the spark plug wires that join these components.
Ignition is the process of providing the energy that is required to initiate a combustion process. When hydrocarbons interact with molecular oxygen to combust, it requires what is known as activation energy to do so – the minimum energy needed to “activate” a chemical reaction.
The basic components in the ignition system are a storage battery, an induction coil, a device to produce timed high-voltage discharges from the induction coil, a distributor, and a set of spark plugs.
Abruptly he turned the ignition key and started the engine. You should never leave the keys of your car in the ignition. She pulled her car key out of her pocket and reached forward to put it in the ignition.
The FuelTech FTSPARK is an extremely high energy Capacitive Discharge Ignition (CDI) system designed to meet the highest spark requirements for racing. Developed for high horsepower combinations and tested proven on 5,000+ horsepower engines!
A standard vehicle would usually have four cylinders and four spark plugs.
Design. The main elements of a spark plug are the shell, insulator, central electrode and side electrode (also known as “ground strap”).
The spark plugs are typically located at the top of the cylinder head. The piston moves down the cylinder where it take in a combination of air and fuel. Next, the piston travels back up to the spark plug, compressing the mixture.
Spark plug wires, also known as ignition cables, are a key part of the ignition system. Car engines that have a distributor or remote coil pack have spark plug wires that transfer the spark from the coil to the spark plug.
The ignition switch, in all but the “start” position, only controls the flow of electricity to the car`s ignition system (hence the name “ignition switch”) and accessories. The starter system controls the starter, when cranking the engine, when the ignition switch is in the “start” position.
The starter is an electric motor that cranks the engine, effectively starting the car. It is under the hood, usually on the passenger side at the bottom of the motor next to the transmission. The ignition switch is a set of electrical contacts that activates the starter and usually is located on the steering column.
The starter is an electric motor that cranks the engine, effectively starting the car. It is under the hood, usually on the passenger side at the bottom of the motor next to the transmission. The ignition switch is a set of electrical contacts that activates the starter and usually is located on the steering column.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Spark plug chaos. Rubber stoppers are preventing the spark plugs from coming out.
ANSWER : Hi there. Try using a pair of small needle nose pliers to pull off the rubber boots from the spark plugs. As you pull, twist the rubber boots to break them free. If you cannot get the rubber boots off, then try using some mineral oil on the boots to aid them off, then clean off the oil with soap and water with degreaser. If you need further assistance with removing the boots from the spark plugs, then seek out a professional, such as one from Your Mechanic, to help you.

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Engine will not stay started. I have replaced idle control valve map sensor spark plugs spark plug wires no check engine light is
ANSWER : You have a problem with the distributor assembly. I recommend replacing the distributor assembly. This will replace all the possible sensors and coil for the ignition and fix the problem you have.

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After part replacements, spark plugs do not work – 1996 Lexus LX450
ANSWER : If you have a Check Engine Light on, first check for those codes to determine what engine management thinks is going on. If no trouble code, check the ignition fuse behind the driver side kick panel (carpeted panel at foot level on the left – for left-hand drive vehicles). If the engine is spinning quickly, and doesn’t appear to be meeting any resistance (as a motor with good compression would have), you may have a broken timing belt. If so – STOP, call a professional mechanic, like a certified technician from YourMechanic for help.

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I have a dodge ram 1500 4.7- 2013 was changing spark plugs on top side with a 5mm socket socket is stuck help?
ANSWER : Hi there. Although what you are listing above is not necessarily a service we offer, it is possible to have one of our mobile mechanics come to your location to help you with this issue. To start, I would recommend setting up a spark plug removal service, then contacting the customer service sales professional that works with you to explain exactly what you need. When this has happened to me, I bite the bullet and purchase a new spark plug and new spark plug socket, as it’s very difficult to get it unstuck without damaging the socket.

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Just replaced spark plugs and wires and my car is still miss firing and I can’t pin point why and my old spark plug is oil covered
ANSWER : Hello there, many faults will cause your 1988 Ford Contour to have a misfire even after the spark plugs were replaced. When oil is seen on the spark plug this indicates that the valve cover is leaking onto the plugs. When this happens it fouls the plugs and can cause a misfire. Until the oil leak is addressed the spark plugs will continue to become fouled. If the misfire persists there are many potential causes such as the plug wires, fuel pump, vacuum leak, oxygen sensor, MAF sensor, or the cap & rotor. A qualified Technician such as one from YourMechanic will be able to diagnose your misfire fault and make any repairs required to resolve the issue.

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Do you use iridiums spark plugs on the spark plug replacement
ANSWER : The OEM plug is platinum. If you desire iridium, simply note that in the customer notes or let the mechanic know at time of scheduling. Obviously, without contrary advice, the original, or aftermarket equivalent, of a part is always used but if you desire an alternative part, just so long as it is cataloged and available for your car we are happy to help you with that. If you desire plug replacement, please use YourMechanic’s convenient service page for spark plug replacement. Once on that page, please click on "Get a Quote" and enter your vehicle information (year, make, model). If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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Spark Plugs spark once
ANSWER : Either a failing crankshaft sensor or impulse wheel could be the cause of the fluctuating RPM reading. The crankshaft sensor signal is often used to start both fuel pump operation and start the ignition coils with the camshaft sensor setting the sequential injection and ignition firing order.

You may want to have faults read out of the ECM prior to replacing the crankshaft sensor and look at the crankshaft sensor wheel. If the sensor is mounted on the front of the engine the sensor wheel may be part of the dampener and may have slipped or vibrates. If it is a sensor wheel that is part of the flywheel, a bent tooth may be the cause. To have this resolved, you may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the equipment and expertise to correct this hard starting issue.

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Hi good day, how many spark plugs and spark plug wires do i need for a 2005 Kia Sorento LX?
ANSWER : Hi there. Since you have the V-6 engine option for your Kia Sorento, the correct amount of spark plug’s needed and spark plug wires is (6) – one per cylinder.

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