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What is a plug gap?

Updated: 8/16/2019
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Wiki User

12y ago

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It's the actual gap between the two electrodes of a spark plug.

The recommended gap is set by the engine manufacturer.

Some spark plugs cannot have the gap adjusted, typically these are multi electrode plugs.

Typically the gap increases by .001" per 1000 miles travelled.

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12y ago
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Q: What is a plug gap?
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