Diesel emissions hardware at the end of its life
A modern diesel dual-cab does not enjoy short suburban trips. A particulate filter that never gets hot enough to regenerate eventually blocks, and by then the EGR valve is carboned, the intake is coated and the turbo has been working against back-pressure for months. We read soot-load and regeneration-history data, check for limp-mode events, inspect the intake, and look for the oil dilution that says failed regenerations have been dumping fuel into the sump.

