Видео с ютуба How To Tell When Spark Plugs Are Bad

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Symptoms of a Bad Spark Plugs

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Symptoms Of a Bad Spark Plug

DIY - How to Diagnose Bad Spark Plugs & Ignition Coils!

DIY How to test or check Spark Plug is good|firing|bad|faulty|defective|needs changing.

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SYMPTOMS OF BAD SPARK PLUGS

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This Means Your Car is Screwed