Constant jerking according to the engine speed {Usually, it is notable when the engine load increases}. Continuous hissing sounds {boiling sounds} are generated from the exhaust system when the engine is idling, the engine speed is low or accelerating abruptly, and fuel deficiency occurs, which results in engine stop.
Perform the Diagnostic system check - engine controls.
Perform the Fuel supply pump functional inspection.
Ensure that the ground of the ECM is free of dirt and is fixed securely in the correct position.
Inspect whether the harness connector is properly connected.
Check the scan tool data list.
Check for related Service Bulletins.
Observe the Mass Air Flow (MAF) parameter and check for MAF sensor malfunction or delayed operation.
Observe the Fuel Rail Pressure (FRP) Sensor parameter on the scan tool. It is normal if the Fuel Rail Pressure (FRP) Sensor parameter shows 0.9 to 1.0 V when the ignition switch is turned ON without starting the engine after 30 seconds or more have passed since the stop of engine operation. If not, inspect for high resistance in each circuit and for any sensor failure.
With the vehicle in neutral and idling, completely depress the accelerator pedal while observing the Fuel Rail Pressure (FRP) parameter and Desired Fuel Rail Pressure (FRP) parameter. The difference displayed should always be held to 5 MPa {725 psi} or less.
Observe the Accelerator Pedal Position (APP) parameter. It is normal if the Accelerator Pedal Position (APP) parameter changes linearly from 0 to 100% according to the accelerator pedal operation.
The CKP sensor is securely installed, and the flywheel is not damaged.
The CMP sensor is securely installed, and the sensor rotor is not damaged.
Inspect for air in the fuel system.
Inspect for water in the fuel.
Inspect whether the fuel is frozen.
Inspect whether the fuel filter warning light illuminates intermittently or frequently.
Inspect the fuel filter for clogging.
Inspect for fuel leakage from the pressure limiter and injector.
Inspect for collapsing, twisting, improper tightening, cracking, or clogging in the fuel system between the fuel tank and the fuel supply pump.
Inspect the vent valve and the hose of the fuel tank for clogging.
{The piping may be clogged due to foreign material from the fuel tank having entered the fuel system.}
Perform the Cylinder Balance with a scan tool.
Perform the Injector Forced Drive with a scan tool.
Observe the Fuel Compensation parameter for each cylinder on the scan tool while idling.
Inspect the air cleaner, air intake duct, and intercooler for clogging, holes, or leakage.
Inspect for any condition that restricts flow within the turbocharger intake duct.
Inspect for a stuck intake throttle valve.
Inspect the inlet cover for clogging or leakage.
Inspect the MAF sensor for dirt or damage.
Inspect whether the exhaust system flow is restricted.
EMI may cause engine failure.
The scan tool can usually detect EMI by checking the engine speed. EMI occurs when rotation speed sharply increases even when the actual engine speed hardly changes. If any problem is found, inspect whether any high-voltage component such as injector wiring is connected to the area around the sensor circuit.