To Next Page
C
Corey KingSep 13, 2025
What causes a Doosan G420FE Engine radiator to clog?
- VVanessa SnyderSep 13, 2025
A clogged radiator in your Doosan Engine is caused by foreign material entering the coolant. Replacing the coolant will solve this issue.
What causes a Doosan G420FE Engine radiator to clog?
A clogged radiator in your Doosan Engine is caused by foreign material entering the coolant. Replacing the coolant will solve this issue.
General| Engine Model | G420FE |
|---|---|
| Number of Cylinders | 4 |
| Compression Ratio | 17.5 : 1 |
| Aspiration | Turbocharged |
| Fuel Type | Diesel |
| Emission Compliance | Tier 4 Final |
General safety precautions before performing service on the engine.
Specifies torque values for standard parts to ensure proper assembly.
Details recommended lubricants and their capacities for engine systems.
Information on identifying engine models and serial numbers.
Provides key technical specifications for engine models.
Lists power and torque ratings for different engine configurations.
Procedure for checking the fuel system for leaks using leak check solution.
Procedure to inspect the engine for oil and coolant leaks.
Visual inspection of vacuum lines and fittings for damage.
Checks for loose/damaged connectors and wires in the electrical system.
Verifies smooth and non-sticking travel of the foot pedal.
Details recommended API and SAE classifications for engine oil.
Procedure to check engine oil level using the dipstick.
Step-by-step instructions for changing engine oil and filter.
Procedure to measure cylinder compression pressure for engine health.
Steps for adjusting the timing belt tension to specification.
Procedures for maintaining the engine's cooling system.
Procedures for checking and adjusting the drive belt tension.
Maintenance procedures for the engine's ignition system.
Maintenance procedures for the fuel system, including filter replacement.
Provides an overview and illustration of the engine's external components.
Details technical specifications for engine components like bore, stroke, etc.
Lists torque values for various engine mechanical components.
Lists and illustrates special tools required for engine disassembly/assembly.
Provides a guide for diagnosing engine mechanical problems and their causes/remedies.
Covers components, removal, inspection, and assembly of the timing belt system.
Explains the outline, operation, service procedures, and troubleshooting of the PCV valve.
Details the components and procedures for the intake and exhaust manifold systems.
Explains the general description, testing, and adjusting of the cooling system.
Lists specifications for ignition coil, spark plug, starter motor, and alternator.
Details the MI-07 ignition system, its components, and operation.
Explains the coil-on-plug ignition system and its components.
Discusses common misfire issues in COP ignition systems and their causes.
Outlines checks for coil-on-plug ignition system components.
Procedures for inspecting and measuring ignition timing.
Details the inspection of ignition coil drivers and their location.
Procedures for inspecting ignition coils for resistance and proper operation.
Steps for inspecting and cleaning spark plugs, including clearance checks.
General description of the charging system and alternator types.
Provides a troubleshooting guide for charging system defects.
Step-by-step procedures for troubleshooting charging system issues.
Procedure to test the alternator output wire connection.
Procedure to test the alternator's output current against rated values.
Steps for disassembling and installing the alternator assembly.
Procedures for removing and installing the alternator and its components.
Steps for disassembling the alternator assembly.
Inspection procedures for the alternator rotor and stator components.
General description of the starting motor, solenoid, and overrunning clutch.
Procedures for diagnosing starting system problems.
Tests for the start relay to determine its functionality.
Troubleshooting guide for various starting system symptoms.
Lists components of the starter motor assembly.
Procedures for removing and installing the starter motor assembly.
Inspection procedures for the starter motor assembly after removal.
Test procedure for the solenoid's hold-in function.
Test procedure for the solenoid's return function.
Test for starter motor performance without load.
Steps for disassembling the starter motor assembly.
Inspection procedures for starter motor armature and field coils.
Checks for continuity in the brush holder.
Inspection of the overrunning clutch for wear and damage.
Procedure for replacing worn starter motor brushes.
Procedure for installing the rear bracket and bushing.
Provides an overview of the MI-07 EMS for G420FE engines.
Details SECM and sensor/switch input specifications.
Lists SECM components and their input specifications.
Overview of the MI-07 Dual Fuel System for G420FE engine.
Describes the operation of the MI-07 system on an LPG fuel system.
Explains the function of the dual dither valve in emissions control.
Details how regulator pressure offset is achieved.
General description of the Small Engine Control Module (SECM).
Information on the MI-07 LP fuel filter's function and replacement.
Explanation of the electric fuel lock-off valve's operation and safety features.
Description of the N-2007 pressure regulator/vaporizer functions.
Detailed operational principles of the N-2007 regulator.
Description of the CA100 mixer's installation and function.
Explains how the CA100 mixer operates with the engine and SECM.
Procedure for adjusting the idle mixture screw on the CA100 mixer.
Explanation of Fuel Trim Valve operation and SECM control.
Details the multi-point injection system for gasoline operation.
Explanation of the electronic throttle control system.
Details the MI-07 ignition system and its components.
Information on heated exhaust gas oxygen sensors (HEGO).
General description of the Small Engine Control Module (SECM).
Provides wiring diagrams for the SECM.
Procedures for inspecting and repairing the Engine Management System.
Details SECM specifications, inputs, outputs, and functionality.
Lists analog inputs used by the SECM for various sensors.
Lists frequency and position inputs for crankshaft and camshaft sensors.
Lists digital inputs for switches and sensors.
Lists the outputs controlled by the SECM, such as injectors and throttle.
Details the camshaft position sensor's location, description, and inspection.
Details the crankshaft position sensor's location, description, and inspection.
Details the MAP sensor's function, circuit, and inspection.
Details the IAT sensor's function, circuit, and inspection.
Details the pre-catalyst oxygen sensor's location, description, and specification.
Details the post-catalyst oxygen sensor's location, description, and specification.
Details the ECT sensor's location, description, and inspection.
Details the LP fuel temperature sensor's location, description, and inspection.
Details the accelerator pedal sensor's location, description, and inspection.
Details the transmission oil temperature switch's location, description, and inspection.
Details the ground speed limit switch's function and inspection.
Details the electronic throttle body's location, description, and inspection.
Procedures for inspecting and repairing the G420FE LPG fuel system.
Safety warnings and general guidance for removal/installation.
Diagrams and notes for proper routing of vacuum and fuel lines.
Diagrams showing certified system hose connections.
Procedures for removing and installing the N-2007 LP regulator.
Step-by-step instructions for removing the N-2007 regulator.
Step-by-step instructions for installing the N-2007 regulator.
Procedures for removing and installing the CA100 mixer for G420FE.
Step-by-step instructions for removing the CA100 mixer.
Safety warnings and guidance for tests and adjustments.
Step-by-step instructions for installing the CA100 mixer.
Tests for checking the N-2007 regulator/converter operation.
Test procedure for the secondary stage of the N-2007 regulator.
Test procedures for the primary stage of the N-2007 regulator.
Test procedure for checking air valve vacuum on the CA100 mixer.
Procedure for adjusting ignition timing using the MI-07 service tool.
Steps for connecting the MI-07 service tool for diagnostics.
Procedure for adjusting idle mixture on the CA100 mixer with O2 sensor.
Idle adjustment procedure for G420F LP systems without O2 sensor.
Procedure for adjusting the power valve on the mixer.
Parts list and exploded view for the CA100 mixer.
Exploded view illustration of the CA100 mixer.
Parts list for the N-2007 regulator.
Exploded view illustration of the N-2001 regulator.
Step-by-step instructions for disassembling the N2001 regulator.
Cleaning and inspection procedures for disassembled N2001 regulator parts.
Lists specifications for MPI gasoline fuel system components.
Lists and illustrates special tools for fuel pressure testing.
Identifies the location of MPI gasoline fuel system components.
Procedures for testing fuel pressure and fuel leakage.
Details the injector's location, description, and specifications.
Procedures for inspecting injectors for operation and resistance.
Procedures for removal and installation of the fuel pump assembly.
Initial checks before starting troubleshooting for MI-07 systems.
Steps to verify SECM and MIL light operation before starting.
Guides for performing visual and physical checks on the system.
Customer problem analysis sheet for basic troubleshooting.
General inspection procedures for electronic parts resistance.
Procedures for diagnosing intermittent problems by simulating conditions.
Guidelines for handling and inspecting electrical connectors.
Procedures for inspecting the wire harness for damage or issues.
Procedures for checking electrical circuits for open circuits.
Procedures for checking electrical circuits for short circuits.
Troubleshooting guide based on engine symptoms for MPI gasoline engines.
Troubleshooting steps when the engine fails to start.
Troubleshooting steps when the engine cranks but won't start.
Troubleshooting steps for irregular idling or engine stalling.
Troubleshooting steps for engine hesitation or poor acceleration.
Troubleshooting guide for detonation or spark knock symptoms.
Troubleshooting guide for backfire issues in the intake or exhaust system.
Troubleshooting guide for engine run-on after the key is turned off.
Troubleshooting guide for rough idle, unstable idle, or stalling issues.
Troubleshooting guide for engine cutting out or missing.
Troubleshooting guide for poor fuel economy and LPG exhaust smell.
Troubleshooting guide for high idle speed conditions.
Troubleshooting guide for excessive exhaust emissions or odors.
Diagnostic aids for identifying rich or lean fuel conditions.
Procedure for checking the exhaust system for restrictions.
Explains how to retrieve diagnostic fault codes from the SECM.
Procedure to enter SECM memory to display diagnostic fault codes.
Procedure to clear stored diagnostic fault codes from SECM memory.
Descriptions of specific actions taken by the SECM for detected faults.
Definitions of various fault types related to sensors and system inputs.
Detailed definitions of specific faults related to APP sensors and their codes.
Continued definitions of fault lists for various sensors and system inputs.
Continued definitions of fault lists for various sensors and system inputs.
Continued definitions of fault lists for various sensors and system inputs.
Continued definitions of fault lists for various sensors and system inputs.
Continued definitions of fault lists for various sensors and system inputs.
Continued definitions of fault lists for various sensors and system inputs.
Continued definitions of fault lists for various sensors and system inputs.
Lists diagnostic fault codes and their probable faults/actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Continued list of diagnostic fault codes and corrective actions.
Information about the MotoView service tool software and its kit.
Details the components included in the service tool software kit.
Instructions for connecting the service tool to the SECM.
Overview of the service tool display screens and parameters.
Explanation of the fault screen in the service tool display.
Information on setting ground speed limits using the service tool.
Provides a complete list of faults and their descriptions from the service tool.
Details the override screen for manual component control via service tool.
Step-by-step instructions for upgrading SECM firmware using the service tool.
Instructions for loading software upgrade files into the correct directories.
Instructions for connecting the computer for the update process.
Instructions for launching the MotoUpdate application.
Steps for programming the SECM module with upgrade software.
Information on installing and setting up the ground speed limit option.
Procedure for setting new speed limits using the service tool.
Information on LPG fuel composition and properties.
Information on LPG storage containers and their components.
Procedures for installing LPG fuel tanks on lift trucks.
List of components for LPG fuel tanks.
Information on the visual and electronic fuel gauges.
Explanation of the service valve operation and safety features.
Information on the quick disconnect coupling for fuel lines.
Description of the liquid filler valve and its safety features.
Information on EPA/CARB emissions certification and North American compliance.
Safety conditions for field wiring and SECM connections.
Glossary of abbreviations used in the manual.
