PSDPlayer
10-09-2006, 06:44 PM
SOME 2003-2007 F-SUPER DUTY AND 2003-2005 EXCURSION VEHICLES EQUIPPED WITH A 6.0L DIESEL MAY EXHIBIT LOW BASE ENGINE OIL PRESSURE CAUSED BY A LEAK IN THE HIGH PRESSURE OIL SYSTEM. IF A HIGH PRESSURE SYSTEM LEAK IS SEVERE, THE HIGH PRESSURE PUMP MAY USE A LARGER VOLUME OF OIL THAN THE BASE ENGINE (GEROTOR) PUMP CAN PRODUCE WHILE CRANKING. IF BASE ENGINE OIL PRESSURE IS LOW, REMOVE OIL FILTER, HOLD DOWN THE OIL DRAIN VALVE (LEFT SIDE OF HOUSING) WITH A SCREWDRIVER AND CRANK THE ENGINE WHILE WATCHING FOR OIL FLOW FROM THE BASE ENGINE OIL PUMP. IF FLOW IS PRESENT, USE THE UPDATED DIAGNOSTICS FOR THE HIGH PRESSURE OIL SYSTEM (ELECTRONIC VERSION OF PC/ED, SECTION 4, STEP 10E). IF THERE IS NO FLOW AT THE OIL FILTER HOUSING DIAGNOSE THE BASE ENGINE OIL SYSTEM FIRST (WORKSHOP MANUAL SECTION 303-01C).<!--</pre>-->