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Type: Posts; User: Veritas

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  1. Replies
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    Yes, I pulled the throttle body off to clean the...

    Yes, I pulled the throttle body off to clean the intake manifold. I cleaned the length of the entry duct all the way back to where it reduces in size.

    Your last statement is foolish on so many...
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    OK, so I've now also done: a very thorough...

    OK, so I've now also done:
    a very thorough carful smoke test with the a friends pressurized smoke machine. No leaks
    checked MAF sensor and cleaned throttle body and intake as far as I could get...
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    Throwing $$$ at a rough idle

    I've got a 2007 Silverado 2500HD 6.0 Vortec with a PO300 random misfire/rough idle issue. 150k miles on the truck. I've read most threads on the subject (much appreciation!), and will try some more...
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    Sort of New 6.0 owner

    Hello,

    I've lurked a while, finally registered. I ended up here (as I suspect many do) as a result of needing help diagnosing my 2007 Silverdo 2500HD. I've already gained so much knowledge on this...
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