Cm870 engine brake

[Chamberpains]

Like I said though, with the exhaust pressure sensor, just because it brand spanking new doesn't mean the piping isn't blocked. Pull the small stainless pipe and verify its clear then the sensor and clean the housing entrance and sensor hole. At very least pull the sensor and shine a light in to the hole. If its got a visible crust around it than there is a good chance there is a lot more in there.

Total cost = time involved and a couple of pipe cleaners and solvent.

These engines with the EGR still attached are absolute soot monsters and only get worse with age.