Diesel cars do not have spark plugs – they work slightly differently, using something known as a ‘glow plug’ instead. Most vehicles usually have one spark plug per cylinder – and most cars on the road will have four cylinders. ‘Thermal performance’ is the phrase used to describe how well the spark plug dissipates heat, and how well it holds the right temperature. The second function of the spark plug is to transfer heat away from the combustion chamber, another very important job. Everything about this process is timed to perfection. So, without a spark plug, your car isn’t going anywhere.Īll of this happens in a few milliseconds – the piston that draws fuel and air in the cylinder will be at TDC (Top Dead Center) when the plug shoots out the small bolt of electricity. As soon as the engine’s pistons start moving, your car begins to power up. The electricity crosses a tiny gap, which starts the ignition for the combustion that your car needs to start up. Spark plugs give a tiny spark of electricity – the spark that will allow your car to start. You’ve probably heard of a spark plug, but do you know how it works? DENSO Iridium Long Life Spark Plug: Best Iridium Spark Plug.Autolite Double Platinum Spark Plug: Best Double Platinum Spark Plug.NGK G-Power Platinum Spark Plug: Best Single Platinum Spark Plug.ACCEL 0736 Copper Core: Best Copper Spark Plug.Without further ado, let’s take a look at what a spark plug is, and how it works. We’ll also recommend some of the best spark plugs out there and show you what to look out for when you’re shopping for a new one. In our guide to finding the best spark plugs for your car, you’ll find out more about how spark plugs work, and about the different types, you can buy (and their pros and cons). With a bad spark plug, or a very old, worn spark plug, your car’s performance could drastically drop – it can impact everything from start-up to power, fuel economy, and could even cause strange rattling and knocking sounds. Without a spark plug, your car won’t be able to start at all. The Best Spark Plugs for Your Car – A Complete Guide!Ī spark plug is a small, relatively cheap part of your car – but it is a vital part of the system. Quick Tips for Buying the Perfect Spark Plugs.Denso (3297) SK20R11 Iridium Spark Plug.Best Iridium Spark Plug – DENSO Iridium Long Life Spark Plug.Denso (4504) PK20TT Platinum TT Spark Plug.Bosch (4501) FGR8DQI Platinum IR Fusion Spark Plug.Best Double Platinum Spark Plug – Autolite Double Platinum Spark Plug.Best Single Platinum Spark Plug – NGK G-Power Platinum Spark Plug.Best Copper Spark Plug – ACCEL 0736 Copper Core.
What to Look for When Buying a New Spark Plug.How the Manufacturer Decides Which Spark Plugs to Use.Hot Plugs and Cold Plugs – What’s the Difference?.The Best Spark Plugs for Your Car – A Complete Guide!.
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