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Can old spark plugs fry the ignition and coils and cause it not to start when car is running great?
Wiki User
∙ 13y ago
Old spark plugs have nothing to do with frying the ignition coil. the coils secondary voltage creates a high voltage that jumps the gap (insulated part that attaches to plug and plug ground) it does not back up current to burn out a coil.
Wiki User
∙ 13y ago
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