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How Many Spark Plugs In A V8 Engine?

Discussion Topic: how many spark plugs in a V8 engine

V8 engines typically have eight spark plugs, although some designs incorporate sixteen spark plugs. In this article, we will discuss the number of spark plugs in a V8 engine and provide details on how to identify dual-spark engines that use additional spark plugs. Join us as we dive into the fascinating world of spark plugs and engine design.

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How Many Spark Plugs In A V8 Engine?

Knowing the total number of spark plugs in your car’s engine depends on two factors: the type of engine and the number of cylinders.

For most V8 engines, there is one spark plug per cylinder, resulting in a total of eight. However, certain engines like twin spark engines without a distributor and newer HEMI engines with MDS (Multiple-Displacement Systems) have two spark plugs per cylinder, totaling sixteen.

It’s worth noting that this holds true only for gasoline engines. Diesel engines, on the other hand, employ glow plugs instead. These glow plugs don’t ignite the air-fuel mixture in the combustion chamber but rather rely on superheated compressed air in each cylinder to ignite the fuel.

Therefore, it’s important to identify the type of engine in your vehicle.

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Detecting a Twin Spark Engine in a V8: A Comprehensive Guide

To determine if your gasoline engine employs dual ignition technology, there are a couple of approaches you can take. First, you can refer to your owner’s manual for confirmation. Another option is to visually inspect your car’s engine by following these steps:

  • Safely open your car hood and allow the engine to cool down.
  • Remove the engine cover, if applicable.
  • Look for spark plug wires located alongside each cylinder head. These wires are typically colored blue, red, or black, and there should be one wire per spark plug.
  • However, if you don’t see any spark plug wires, it means your V8 engine utilizes coil packs instead. These coil packs are positioned on top of the engine and are separate from the crankshaft. There should be one coil pack per spark plug.
  • In the case where you count more than eight spark plug wires or coil packs, your V8 motor is equipped with a twin spark engine, housing sixteen spark plugs.
  • Please note that earlier generations of the HEMI V8 engine utilized the ignition coil, distributor, and spark plug cables with one spark plug per cylinder. The modern 5.7 HEMI engine, introduced in 2003, features two spark plugs per cylinder.

Related: Bad Spark Plug Symptoms

Let’s now explore the number of spark plugs found in common V8 engines.

Car MakeNumber Of Spark Plugs In V8
2015 Ford Mustang GT8
2003 5.7L HEMI Chrysler16
2003 Mercedes CL55 AMG16
2006 Dodge Charger R/T16
2008 Chevrolet Corvette8
2016 Ford F1508
2013 5.7L Dodge Ram16


For assistance with determining the number of spark plugs in your V8 engine, consult an automotive dealership or seek the guidance of a professional mechanic.

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Timothy Ballard

I’m Timothy Ballard, owner of a used car dealership in Springfield. I love just about everything automotive, but I have a special place in my heart for trucks. I’m an ASE Certified Master Technician, so I know my way around a car. In my spare time, I enjoy traveling with my family and hiking new trails.

1 thought on “How Many Spark Plugs In A V8 Engine?”

  1. For optimal functioning, an engine necessitates one spark plug per cylinder it possesses. Hence, a four-cylinder engine incorporates four spark plugs, a V6 incorporates six, a V8 incorporates eight, and so forth. This configuration ensures efficient performance and seamless operation.


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