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Good question. My 4 cyl Ford Ranger has 8 plugs so I checked out why-- the answer is, the second set has nothing to do with how the engine runs, it is there to burn more of the excessive gasses so less are dumped out and cleans up emissions. :>) Regards, Fullait

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Q: Why did some 4-cylinder engine have 8 spark plugs?
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How many spark plugs are in a 4 cylinder engine?

The number of spark plug in a 4-cylinder engine depends on the type of engine you have. Some engines only have four spark plugs on the intake side for the ignition of the fuel. Other engines have eight spark plugs, four on the intake side to ignite the fuel and four on the exhaust side to ignite the exhaust fumes.


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Where are the sparkplugs located on the 1998 Chevy Malibu?

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How many spark plugs does a 4 cylinder engine have?

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