Which clearance, torque, or sensor value is correct on a Mitsubishi GK21E or GK25E gasoline engine gets settled by the 161-page Mitsubishi GK21E, GK25E service manual PDF, factory publication 99789-72100. Engine control takes up roughly a third of the book: on-board diagnostic trouble codes, ECM component inspection, the electronic throttle assembly, and both gasoline and LPG injectors, with wiring diagrams showing each sensor and actuator circuit back to the ECM. Mechanical service fills another big share, and the electrical chapter ends with starter and alternator overhauls in exploded view. Gap your plugs at 0.8 to 0.9 mm and fill the crankcase to 3.8 L at the H line. Chasing a dual-fuel fault code with the engine half apart wears thin fast. Bookmarks and a real text layer put you on the right diagnosis page quickly, so you order the correct sensor the first time and have the torque values ready before it goes back together.
What's Inside This Mitsubishi GK21E, GK25E Manual
| System | Pages | Key Topics |
|---|
| Introduction | 5 | |
| Maintenance | 6-17 | Specifications, Tightening Torque, Maintenance Schedule, Oil and Grease, And Capacity, On Board Inspection and Service, Engine Body Related, Ignition Systems |
| Engine Mechanical | 18-61 | Engine Service |
| Engine Lubrication and Cooling Systems | 62-69 | Lubrication System, Oil Pressure, Engine Coolant System, Water Pump, Thermostat |
| Engine Fuel | 70-89 | Emission Control System, Trouble Diagnosis, Electronic Control Throttle Assembly, Gasoline Fuel Injector, Lpg Injector Holder, Vaporizer |
| Engine Control System | 90-143 | On Board Diagnostic System, Trouble Diagnosis, Basic Inspection, Component Parts Inspection, Ecm Components, Blow-By Gas Recirculation Device |
| Engine Electrical System | 144-161 | Starter Motor, Alternator, Overhaul, Assembly Inspection, Exploded View, Disassembly |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Oil pan drain plug torque | 29.4 - 39.2 N·m | p. 13 |
| Spark plug torque | 19.6 - 29.4 N·m | p. 60 |
| Oil capacity H line | 3.8 L | p. 7 |
| Oil capacity L line | 2.8 L | p. 7 |
| Spark plug gap | 0.8 - 0.9 mm | p. 7 |
| Valve clearance (Hot) Intake | 0.38 mm | p. 7 |
| Valve clearance (Hot) Exhaust | 0.38 mm | p. 7 |
| Oil filter element tightening torque | 14.7 N·m | p. 8 |
| Oil pan drain plug tightening torque | 29.4 - 39.2 N·m | p. 13 |
| Spark plug tightening torque | 19.6 - 29.4 N·m | p. 60 |
| Cylinder head bolt tightening torque | 68.6 N·m | p. 12 |
| Main bearing cap tightening torque | 83.4 - 93.2 N·m | p. 26 |
