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knocking sound

  1. 98 explorer horrible knocking sound

    2nd Generation Explorers | 1995-2001
    I have 98 explorer sport 6 cylinder single overhead cam, today I replaces the spark plug wires because I had an engine code that said the 6th cylinder was misfiring. I read a lot of threads and all suggested that I start with spark plug wires. I changed 3 of them along with the idle air control...