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How to read spark plugs - Checking the tune and condition of your engine

Reading spark plugs is the easiest way to check how your engine is running. When you change your spark plugs it's the perfect time to get a glimpse into the internal health of your engine. In this video we have a look at spark plugs from a V12 engine that has been idling a lot. Change Jaguar V12 HE Spark Plugs: https://youtu.be/-lCSVPItNls ...

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