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  1. Cleaning a Dirty Catalytic Converter?

    5.4L V8 Specific Topics
    I've read various reviews on the net...maybe you know? I inherited the truck one month ago. 1. Ford told me my problem (misfire) was a faulty cat. = $2,000 2. My local guy quoted me $900, then $400, but when he took the cat. off he said it was fine. 3. Next guy took off valve covers, finds the...
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