Wtf seafoam!

Discussion in 'Feedback, Help and Suggestions' started by jdmdrew, Oct 6, 2019.

  1. jdmdrew

    jdmdrew Newbie

    Likes Received:
    Apr 26, 2011
    I'm hoping to get some help from you guys on a 03 trailblazer 4.2. Has anyone here had a bad experience with seafoam? So right after I used it I haven't been able to fix a misfire. Somehow it caused a coil to go bad. I replaced it and I'm getting spark on that coil now and the spark plugs look fine but still get random misfire. What could it be? Keep in mind it ran good right before the seafoam.

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