To accurately test the fuel pressure on a Ford 6.0L Diesel engine, the engine must be placed under a load. If the vehicle is only tested in the bay with a gauge or scanner errors are more prone to occur.
Bostech makes checking the fuel pressure easy with the ISK975K. Just purchase the ISK975K, install the cap, hookup the gauge hose and gauge, place the gauge face down on the windshield, close the hood, and observe the gauge on the test drive. Once you have completed your testing just simply replace the hose with the Schrader valve included with your fuel filter cap!
If you have previously purchased the ISK975 cap from Bostech you can purchase the ISK977 which includes the hose and gauge.
Contents of the ISK975K are:
-ISK975 Bostech Billet Fuel Filter Cap
-100 PSI Liquid Filled Gauge
-6ft Fuel Hose with Fittings