Scooters and Motorcycles - How to read a spark plug

 Scooters and Motorcycles - How to read a spark plug - Photo 

Being able to "read" a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine's overall operating condition.


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  • kokokoboko

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    Being able to "read" a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine's overall operating condition.

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