Tons of black smoke usually when it gets down in rpms around 1000 sometimes it will lug then boom kick in smoke like hell then clear up 2005 Mack chn 613 427 motor deleted sorry high rpms clears up im lookin for leaks could it be pop off valve ? I know very little about Mack engines this is first one so I don’t know the what’s or why’s these are a different demon for sure anything helps thanks
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Artful dodger
Tons of black smoke usually when it gets down in rpms around 1000 sometimes it will lug then boom kick in smoke like hell then clear up 2005 Mack chn 613 427 motor deleted sorry high rpms clears up im lookin for leaks could it be pop off valve ? I know very little about Mack engines this is first one so I don’t know the what’s or why’s these are a different demon for sure anything helps thanks
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