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  1. OEM Issues
    I changed my plugs a short while ago due to a very bad misfire on cylinder #6. the new AC Delco plugs fixed the rough idle and misfire....for about 3 weeks. I was sitting in a drive-thru when the miss returned. now after another 3 weeks today it finally set a CE light, I pulled the code when I...
    coil misfire p0306 rough idle valve cover
  2. Engine Tunes/Mods
    How do you remove the black protector covering the intake manifold? I just tried prying it and it sounds like something breaking. I need to remove it to get access to the intake manifold bolts. Any information would help. See image below for link.
    intake manifold valve cover
  3. OEM Issues
    Hello everyone this is my first thread to the forum. I've searched everywhere but it seems my problem is a little different than anyone else with issues regarding broken spark plugs. First off I'm a proud owner of an '06 trailblazer ls ext. It already had over 100,000 miles and there is no...
    broken spark plugs valve cover
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