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smoke stops immediatley when engine starts

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  1. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    2008 trailblazer 4.2 vortec burning oil I’ve been noticing a quick puff of blue smoke out the tailpipe when first started, goes away immediately Anybody know if there’s a common problem with Chevy Trailblazers for burning oil on start up? Has 70,000 miles- so fairly low, I’ve changed the...
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