JCB K4718 Intake manifold pressure drop too high during starter repair
Here is a JCB equipment repair document K4718 Trouble Code Intake Manifold Pressure Drop Too High At Crank. For other repair cases for JCB go to: JCB Trouble Repair Related Content: JCB Heavy Duty Truck Diagnostic TOOL Reviews The measured intake manifold pressure (the signal from the boost pressure sensor) is below the warning limit during engine cranking. Possible causes are: The engine air supply is clogged. The boost pressure sensor wiring is defective. The boost pressure sensor is defective. Reaction in EEM The FC is stored and the warning lamp is activated. The CAN message indicates active fault. NOTE:The engine may not start, or it starts slowly and runs poorly. Solution Check the engine air supply system completely, consult the service instructions if necessary. Check the air filter. Check the piping from the air filter to the turbocharger (look for obstacles in the joints, the bends). Check the turbocharger. Check the piping from the turbocharger to the cha...