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  1. OEM Issues
    All, I need some input and specifically regarding the intake manifold. I have a 2003 Trailblazer with the 4.2. It's 2 wheel drive. I've had a bit of an engine idle problem and I did recently buy the car used (less than 8 months ago). It isn't anything major, but sitting at a light the idle...
    crack intake manifold rough idle surging
  2. The 02-09 "How-To" and DIY Section
    Sears recently installed Spark plugs for me (the left side is a pain!)and while they were doing that they busted off the Intake Manifold Suction stem that leads from the Evap Canister on the right side of the engine. I could replace the intake manifold at a cost of $438 for a new one but I...
    intake manifold
  3. OEM Issues
    Intake Manifold Removal Help '05 TB I have an 05 TB 4.2L I6. Was throwing the PO303 code, compression test showed cylinder three had none. Went through the instructions in the Haynes manual to remove the intake manifold, but that dang thing wont wiggle out. I know that I dont need to remove it...
    intake intake manifold manifold
  4. 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
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