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Message: <blockquote data-quote="JayBo" data-source="post: 2099302" data-attributes="member: 26340"><p>Just a thought,,,If the smoke is black and a wee bit rough idle at start,,,The first thing I would do is,,after it set a little while,,pull the vacuum hose off the fuel pressure regulator, engine not running of course,, and see if any liquid fuel drips. if it does replace the regulator,,,This is very conman in all vor-tech 5.3 ,, 6.0 and 4.8 gm gasoline engines...Hope this helps...Thanks jay</p></blockquote><p></p>