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Spark Plugs Replacement

 

What is a spark plug and how it works?

Spark plug is one of the essential components of vehicle’s ignition system. In order to ignite the fuel and air mixture inside the combustion chamber, spark is needed and this task is performed by the spark pug. Spark plug takes 12 volts from the ignition coil and produces a spark at the right moment when needed as a result of this spark the fuel and air mixtures ignites and the combustion cycle takes place inside the engine’s combustion chamber. The quantity of the spark plugs in the engines depends upon the the number of the cylinders of the engine, Some engines have 2 spark plugs on each cylinder. With the passage of time the electrode on the tip of the spark plug which is responsible of producing spark wears out and its ability to produce spark reduces as a result of which the engine gets performance issues and sometime completely fails to perform.


What are the Replacement intervals of spark plugs?

Most vehicles requires regular replacement of spark plugs at or around 60000 miles . however It is also possibility in some cases that a spark plug might fail before the service schedule date. If that is the case with your car, get it checked by a professional mechanic and if needed replace the sparkplugs.


What is a cost of replacing Spark plugs?

The cost of spark plugs replacement depends on the quality and quantity of plugs needed on the vehicle, The quantity of the spark plugs depends upon the the number of the cylinders of the engine, Some engines have 2 spark plugs on each cylinder. To find out the exact quantity of spark plugs needed and the cost to replace them on your vehicle please select the make and model of your car at the top of the page.

On average the cost of replacing 4 spark plugs on most modern cars is between £48 to £87, some cars have special long life iridium plugs if that the case with your vehicle than the cost would be over £100 for 4 spark plugs replacement.


What are the symptoms of bad or faulty spark plugs?

  • When Check engine light comes on with a misfire code.
  • When you see a flashing check engine light during acceleration.
  • When the fuel economy
  • When there is a power loss while acceleration.
  • When there is a rough engine performance on idle.
  • When emission test fails.
  • When engine fails to start.

Spark Plugs

Can I drive with a faulty spark plugs?

Its not recommended to drive the vehicle with cylinder misfire, you can still drive the vehicle if the misfire is not on multiple cylinders but its better to get the spark plugs changed soon as possible to avoid any damage to the engine. If you continue driving with the faulty spark plugs the misfire on the engine cylinder could cause overheating of the catalytic converter.

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Garages & Mechanics For Spark Plugs Replacement

Recent Mechanic Reviews For Spark Plugs Replacement

Auto Tech mobile mechanic from Reading
Verified
(5.0 ratings out of 26)

Auto Tech

Mobile Mechanic in Reading, 9 years of experience

404 Jobs Completed

steve abbot
19 Aug 2020

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Auto Solutions mobile mechanic from Reading
Verified
(5.0 ratings out of 8)

Auto Solutions

Mobile Mechanic in Reading, 10 years of experience

50 Jobs Completed

Asfand Malik
16 Oct 2020

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Frequently Asked Questions

It depends on the make, model and quantity of the spark plugs. please type your car registration number at the top of the page to find out the exact cost for your car.


no it is not recommended, spark plugs are changed together at the same time.


When Check engine light comes on witha misfire code. When you see a flashing check engine light during acceleration. When thefuel economy When there is a power loss while acceleration. When there is a roughengine performance on idl Whenemission test fails. When engine fails to start.


Its not recommended to drive the vehicle with cylinder misfire, you can still drive the vehicle if the misfire is not on multiple cylinders but its better to get the spark plugs changed soon as possible to avoid any damage to the engine.


Most vehicles requires regular replacement of spark plugs at or around 60000 miles


it depends on the make and model of the car most engines will require 4,6, or 8 spark plugs.


Cost by make for Spark Plugs Replacement

Popular Makes Average Price
Volvo £79.89 Compare Quotes
Vauxhall £69.80 Compare Quotes
Renault £72.56 Compare Quotes
Bmw £108.89 Compare Quotes
Volkswagen £86.65 Compare Quotes
Citroen £69.88 Compare Quotes
Audi £112.65 Compare Quotes
Ford £78.35 Compare Quotes
Mini £77.32 Compare Quotes
Mercedes-benz £128.32 Compare Quotes
Mazda £72.65 Compare Quotes
Nissan £95.32 Compare Quotes
Hyundai £93.32 Compare Quotes
Peugeot £79.98 Compare Quotes
Toyota £104.32 Compare Quotes
Fiat £73.65 Compare Quotes
Lexus £116.69 Compare Quotes
Seat £77.36 Compare Quotes

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