Low Fuel Pressure is one cause of premature 6.0L injector failure- adapter makes checking fuel pressure easily.
For 6.0L Ford Powerstroke Fuel Pressure Test Port & Adapter with Schrader Valve
6.0L Powerstroke Fuel Pressure Test Fitting Adapter for 2003-2010 Ford Diesel En
6.0L Powerstroke Fuel Pressure Test Fitting Fit for 2003-2010 Ford Diesel Engine
for Ford Diesel 6.0L Powerstroke Fuel Pressure Test Fitting Adapter 2003-2010
6.0L Powerstroke Fuel Pressure Test Fitting Adapter for 2003-2010 Ford Diesel