| Cause | Correction |
|---|---|
| Low Fuel Level in Tank | Fill fuel supply tank. |
OK | |
| Idle Speed Too Low | Check / adjust low idle screw setting. |
| OK | |
| Air in the Fuel System | Bleed fuel system and check for suction leaks. |
| OK | |
| Fuel Supply Restricted | Clean or replace pre-filters and screens, check for fuel line restrictions. |
| OK | |
| One or more Injectors Malfunctioning | Check / replace injectors. |
| OK | |
| Worn or Malfunctioning Injection Pump | Remove pump. Have pump recalibrated or replace injection pump. |
Purpose:To determine if the glow plug system operation is sufficient to permit starting. Recommended Procedure:Check Relay Operation by installing a DVOM on the glow plug feed side of the glow plug relay (large stud with two wires connected). Turn the ignition key to the ON position but do not attempt to start. Note the time…
Cause Correction Engine Drive UnitsEngaged Disengage driven units and Check for loading from malfunctioning accessories. OK Crankshaft RotationRestricted Rotate the crankshaft to Check for rotational Resistance. OK Starting CircuitConnections Loose or Corroded Check and tighten Connections. OK Battery Charge Low Check battery voltage. OK No Voltage to Starter Solenoid Check voltage to Solenoid. OK Solenoid…
Inspect the intake piping for cracked hoses, loose clamps, or punctures which can allow dirt and debris to enter the engine. Tighten or replace parts as necessary to make sure the air intake system does not leak.
The Bosch VP44 Injection Pump Overflow Valve is located on the side of the injection pump. It is also used to connect the fuel return line (banjo fitting) to the fuel injection pump. Bosch VP44 Injection Pump Symptoms Low RPM miss/instability White smoke Hard starting Engine dies at idle Low power Fuel filter cracking Fuel volume from…
Controlled venting is provided at the injection pump through the fuel drain manifold. Small amounts of air introduced by changing the filters or injection pump supply line will be vented automatically, if the fuel filter is changed in accordance with the instructions. No manual bleeding of fuel lines is required. NOTE: Manual bleeding is required if:…
Power Stroke 7.3 Liter Diesel Engine High Pressure Oil Flow Oil Pressure Sensor High-Pressure Oil Pump (HPOP) Cylinder Head High-Pressure Oil Feed Hoses High-Pressure Oil Rail Injector Oil Feed Galleries Fuel Injectors (8 Req’d) Oil Pressure Sensor Oil Pressure Regulator Engine Front Cover High-Pressure Oil Pump Reservoir During initial start or cold start, the Power Stroke…
