What do spark plugs do?
Spark plugs convert electric current from the ignition coil into a spark that ignites the fuel and air mix inside the car engine. This combustion is what powers the engine and moves the car. Spark plugs are located in the cylinder head and are connected via external leads attached to the engine.
How often should spark plugs need replacing?
Most manufacturers recommend that spark plugs should be replaced at around every 30k miles; this is only a guideline, as the quality of the component, engine performance and driving habits can affect spark plug lifespan significantly.
The law, vehicle regulations and your MOT
Old or damaged spark plugs can affect engine performance areas that cause an MOT failure, for example, in emissions testing. Poor performing spark plugs or filters that clog up can affect the gasses that are delivered from your exhaust; replacing these faulty parts can often rectify the problem.
What causes spark plugs to stop working correctly?
Spark plugs can wear out over time, at which point they should be replaced to ensure the correct combustion of fuel. There is also a chance of potential carbon build up on the electrodes; this is known as carbon fouling and will affect the correct operation of the spark plugs. Oil can build up on the spark plugs too, which can be rectified with a simple cleaning.
Spark plugs can occasionally melt due to excessive engine temperatures. This isn’t usually a spark plug fault, but that of the engine or fuel system.
Symptoms of malfunctioning spark plugs
Starting your engine is problematic
If your car struggles or fails to start, it could be down to faulty spark plugs.
Engine cut out or misfiring
If your engine cuts out after starting or during its usual operation, if it fails to run smoothly or it vibrates excessively under normal use, then your spark plugs could be due to worn out spark plugs.
The dashboard engine warning light is illuminated
Any dashboard warning light is due to a sensor detecting fault or incorrect operation of a related component. An engine warning light could relate to a faulty spark plug.
Fuel consumption is higher than normal
Faulty spark plugs can cause your engine to burn fuel in an erratic manner, affecting both vehicle performance and fuel consumption. If you notice a change in your fuel consumption, it could be a spark plug problem.
Citroën is a French automobile manufacturer, part of the PSA Peugeot Citroën Group since 1976, established over 100 years ago in March 1919.
Citroën produced the world’s first mass-produced front-wheel drive car and one of the first to feature a unitary type body, with no chassis supporting its mechanical components.
How popular is Citroën in the United Kingdom?
Citroën is probably better known for its quirky design and fun fashion styled brand of cars. Offering something different from more traditional sporty looks, they are a brand that provides value without being cheap.
There were 1.3m Citroën cars on the roads at the close of 2018; a figure that peaked in the early part of 2015 and has maintained a very similar number ever since.
Good value vehicles for family driving
Citroën offers a range of fun-looking smaller city cars and family cars for every ilk. The smallest starts with their C1 city model, growing into the C3 mini-MPV and SUV models, then the C4 subcompact and compact featuring crossover and SUV styles, up to the C5 family saloon, that is also available as an SUV sporting Citroën’s Aircross moniker.
With models featuring up to 7 seats, Citroën doesn’t just create cars for everyday family motoring—they supply cars for the biggest of families.
Citroën’s reliability and reputation
You wouldn’t instantly think of Citroën as one of the technological leaders of the automotive industry, but as well as being the first to introduce front wheel drive and unitary body type vehicles, they were also responsible for producing the first hydropneumatic self-levelling suspensions system in 1954. Just one year later they introduced another milestone in motoring history, producing the first mass-produced car with modern disc brakes.
Citroën ranked 25th place out of 30 car brands in the What Car? Reliability Survey in 2018. Probably not a figure to earn them too much confidence and an increase in sales, but when you consider that they still featured higher than Mercedes-Benz, Jaguar and Land Rover then maybe the competition is a little tougher throughout that survey than it first appears.
Recent Citroën recalls and reliability issues
Various recalls have been made on Citroën models throughout their motoring history. The following are a list of the most recent in the UK and Europe.
25/04/2019 – Citroën Berlingo
The handbrake mechanism may not be correct
27/02/2019 – Citroën C4 Aircross (2011–2015)
The battery charge program may not be to specification
12/02/2019 – Citroën C3 Aircross (2016–2018)
The wires of the seat position sensor may not be correct
01/02/2019 – Citroën Spacetourer and Dispatch IV (2015–2108)
The loosening of the front wishbone lower ball joints
01/02/2019 – Citroën Spacetourer and Dispatch IV (2016–2018)
The fixing bolt of the front suspension wishbone
01/02/2019 – Citroën Spacetourer and Dispatch IV (2015–2018)
The air conditioning compressor pulley could break
01/02/2019 – Citroën Spacetourer Dispatch IV (2016–2018)
Rear suspension wishbone mounting bolts
14/01/2019 – Citroën C3 (2018)
The steering column universal joint clamp may be incorrectly fitted
All recall information sourced from gov.co.uk data.