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Home >> Ford >> 1996 >> E 350 Van V8-7.3L DSL Turbo VIN F >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Hard Start/No Start Diagnostics >> Injection Control Pressure (ICP) Tests >> Injection Control Pressure Leak Test
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Injection Control Pressure Leak Test

Removing the Injection Control Pressure (ICP) sensor and inspecting the level in the oil rail will determine if oil is being supplied to the rail. Removing the inspection plug in the top of the reservoir will help determine if the reservoir is full. A reservoir that drains back after the engine has not been operated for a long period of time can cause a hard start condition.

PURPOSE
Isolate the cause of low injection control pressure.

RECOMMENDED PROCEDURE






Right Cylinder Head Check
Remove the high pressure hose from the right cylinder head and cover the fitting on the cylinder head with the appropriate cap from the Fuel/Oil/Turbo Protector Cap Set T94T-9395-AH. Install the plug from the Oil High Pressure Leakage Test Adapter Set D94T-6600-A into the high pressure hose to block it off. Connect the ICP/EBP Adapter Cable D94T-50-A to the ICP sensor. Connect a Digital Volt-Ohm Multimeter (DVOM) between signal return and ICP signal wires on the ICP/EBP Adapter Cable D94T-50-A. Crank the engine and monitor the signal. The DVOM should read 1 to 4 volts.

CAUTION: The engine may start!

If the engine starts or if injection control pressure is now within specification, the injection control pressure leak has been isolated to the right cylinder head. Inspect the fuel to see if oil is in the fuel. If no oil is present in the fuel, remove the valve cover, crank the engine and inspect the injector body and injector bore area for leakage.

CAUTION: Oil is under high pressure!






Left Cylinder Head Check
Remove the cap and plug, then reinstall the high pressure hose to the right cylinder head. Remove the high pressure hose from the left cylinder head and cover the fitting on the cylinder head with the appropriate cap from the Fuel/Oil/Turbo Protector Cap Set T94T-9395-AH. Install the ICP adapter from the Oil High Pressure Leakage Test Adapter Set D94T-66OO-A into the high pressure hose. Remove the ICP sensor and install the sensor in the end of the ICP adapter. Connect the ICP/EBP Adapter Cable D94T-50-A to the ICP sensor. Connect a DVOM between the signal return and ICP signal wires of the ICP/EBP Adapter Cable D94T-50-A. Crank the engine and monitor the signal. The DVOM should read 1 to 4 volts.

CAUTION: The engine may start!

If the engine starts or if injection control pressure is now within specification, the injection control pressure leak has been isolated to the left cylinder head.
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