Spark Plug Replacement

Spark Plug Replacement Quotes

If your spark plugs need attention or you need a spark plug replacement - Auto Hero can help!

Here, you can look for service centres near you that replace spark plugs and can look at any issues you have with your ignition system.

Don't panic if you're not 100% sure what the problem is. When you talk to one of Auto Hero's spark plug and engine partners, you'll be able to explain the symptoms you're experiencing and get trustworthy expert advice.

What does a spark plug replacement cost?

Although it depends a little on how many cylinders you car has, you'll probably be pleased to hear that replace spark plugs is a fairly one of the cheaper car repairs. Individual standard spark plugs cost as little as $5 - $20 for many vehicles - and even considering labour costs, the overall bill will usually come in between $100 - $300.

That said, some performance and commercial vehicles require specialist spark plugs - which can cost as much as $100. Although this is rare.

If you'd like an accurate quote for having the spark plugs replaced on your vehicle, we make it quick and simple! Just let us know where you are, a few details about your vehicle - then we'll show you a range of quotes from workshops near you.

What is a spark plug?

Most people have heard of spark plugs - but it's useful to know exactly how they work so you understand what effect they can have if they're not working as they should.

A spark plug is an electrical conductor - it transforms the electrical current that comes from the ignition system and creates a spark that's used to ignite the fuel in the car engine.

There is usually one spark plug for every cylinder in most engines - so if you have a 4-cylinder engine, there will be 4 spark plugs. Likewise, if you have a vehicle with a V8 engine, there will be 8 spark plugs.

Occasionally, vehicle manufacturers will use two spark plugs per cylinder - but this is usually reserved for performance or luxury vehicles.

The combustion process that happens inside your engine is very precisely timed. The spark has to come at the same time as fuel and air is sent into the combustion chamber. When this mixture ignites, it pushes the piston down - creating the mechanical movement in the engine which eventually turns the wheels.

If a single spark plug isn't working as it should, the engine will not produce as much power as usual and the 'check engine' warning light may show on your dash.

What are some signs that you need new spark plugs?

The most common symptoms of failed or failing spark plugs are:

Engine warning light 

Your engine warning light will often come on if the car's ECU (onboard computer) detects any kind of problem with the running of the engine. If you have an issue with the spark plugs, this could cause the warning light to show.

Engine misfires

 Your car has more than one cylinder in which the fuel/air combustion needed to move takes place. If one of these cylinders isn't working as is should, it's described as a 'misfire'. With one or more cylinders misfiring, acceleration or engine power will feel like it's 'stuttering' - coming and going as the misfiring cylinder fails to produce the right amount of power.

Poor fuel economy 

If the engine is not igniting fuel as it should, the ECU may increase the amount of fuel that's being sent to the engine to help with combustion. If a spark plug isn't using this fuel, it's wasted - and fuel economy will go down.

Poor performance

Even if the car isn't consistently misfiring and causing noticeable vibration or jerking under power, malfunctioning spark plugs may cause a drop in performance.

What does a spark plug replacement involve?

To replace spark plugs in your vehicle, a mechanic will usually follow these steps:

• Diagnostic equipment will be used on the vehicle to identify ECU error codes. This helps to work out where the problem is coming from.
• The ignition system is cleaned, ready for disassembly
• If required, the intake manifold will be removed
• The ignition leads or coil packs will be disconnected and removed - allowing access to the spark plugs
• The old spark plugs are removed and inspected - then the threads they sit in within the cylinder head will be inspected for any signs of damage
• New spark plugs are then fitted
• The spark plug wires and ignition leads are reconnected
• If the inlet manifold has been removed, it will be refitted with new gaskets
• The engine will be started to check that everything is functioning properly
• Diagnostic equipment will be used to check that error codes are no longer showing and previous errors will be cleared from the system

Spark plugs for all kinds of vehicles

Having your engine operating correctly an essential part of being able to drive safely - whatever vehicle you have. Auto Hero can help with spark plugs for virtually all vehicle types:

• Passenger vehicles
• SUVs
• 4x4s
• Trucks
• Vans
• and more

All makes and models covered

From Holden, Toyota and Ford through to European makes like Audi, BMW, Mercedes Benz and VW - we're partnered with workshops that offer quality workmanship on any make and model.

Your replacement spark plugs will meet all manufacturer recommendations and will work perfectly in your vehicle.

Is it time for replacing spark plugs in your vehicle?

If you think it's time for someone to look at replacing the spark plugs in your engine, we'll make it easy to get great service and save money.

With just a few details about your vehicle and your location, we'll show you quotes to replace the spark plugs in your engine. Then, you can use our online booking service to choose the one that works for you - whether that's the closest workshop, the most highly rated by motorists near you, or a mobile mechanic that can come to your home or workplace.

We believe fairness and transparency should be priorities when you're having your car repaired. Therefore, the price you've given when you get a quote for a car battery replacement is the price you'll pay. We do not work with service centres that haggle, inflate their prices or insist on additional work.

What's more, we don't charge any commission when you book your car maintenance using our website. We are Australia's highest reviewed auto repair comparison website - and we insist that the car servicing partners we work with share our great service and high standards.

Let us know what you need, and we'll find the best price for your car's new spark plugs