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Home >> Ford >> 2003 >> Excursion 5.4 L, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Controls - System & Component Testing - 7.3L Diesel) >> Hard Start/No-Start Diagnostic Procedures >> Injection Control Pressure Leak Test >> Right Cylinder Head Check
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Right Cylinder Head Check

WARNING: This page is about a different variant/trim than selected.
  1. Perform TEST 9C: MONITOR ICP PID WHILE CRANKING  (if not already completed). If PID reading indicates less than 500 psi (3448 kPa), injectors are not being energized because of insufficient pressure. Remove high pressure hose from right cylinder head using Quick Disconnect Tool (303-625). See Fig 1. Using Fuel/Oil/Turbo Protector Cap Set (T94T-9395-AH), install appropriate cap on high pressure hose fitting on cylinder head. Using plug from Oil High Pressure Leakage Test Adapter Set (303-S626), install plug into high pressure hose.
    Fig 1: Locating High Pressure Hose (Right)
    G99C02509Courtesy of FORD MOTOR CO.
    WARNING: In the following steps, engine may start.
  2. Connect ICP/EBP Adapter Cable (D94T-50-A) between ICP sensor and sensor wiring harness connector, if available. See Fig 2. If ICP/EBP adapter cable is not available, go to next step. Connect a DVOM between SIG RTN circuit (Black wire) and ICP signal circuit (Green wire) at ICP/EBP adapter cable. Observe DVOM and crank engine. If engine starts, or voltage reading is 1-4 volts, an injection control pressure oil leak has been isolated to the right cylinder head. Go to step  4. If engine does not start, or voltage reading is not 1-4 volts, perform LEFT CYLINDER HEAD CHECK .
    Fig 2: Equipment Hookup For Injection Control Pressure Test
    G99E02505Courtesy of FORD MOTOR CO.
  3. Using scan tool, access and monitor ICP PID from PID/DATA MONITOR & RECORD menu. Crank engine. If engine starts, or if ICP PID reading indicates 500 psi (3448 kPa) or more, an injection control pressure oil leak has been isolated to the right cylinder head. Go to next step. If engine does not start, or ICP PID is still less than 500 psi (3448 kPa), perform LEFT CYLINDER HEAD CHECK .
  4. Inspect fuel system for oil contamination. If no oil is present in fuel system, remove cap and plug, and reinstall high pressure hose to right cylinder head. Remove right valve cover. Crank engine, and inspect injector body and injector bore area for oil leakage. Repair as necessary.
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