I know this seems fairly obvious and usually not the case. Are there any rags left in the intake track from maintenance? From air filter to intake shelf on the head, all clear?
Just asking because I know a knuckle head that’s done this.
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Nick J
'14 Silverado LTZ 5.3 4wd
'05 Cummins QCSB 4wd 48re
'91 Cummins w350 5spd
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