Engine Mechanical - Qr25DE

• Precautions
  • Precaution for Drain Engine Coolant
  • Precaution for Disconnecting Fuel Piping
  • Precaution for Removal and Disassembly
  • Precaution for Inspection, Repair and Replacement
  • Precaution for Assembly and Installation
  • Parts Requiring Angle Tightening
  • Precaution for Liquid Gasket
    • Removal Of Liquid Gasket Sealing
    • Liquid Gasket Application Procedure
• Diagnostic Information and Procedures
  • NVH Troubleshooting - Engine Noise
  • NVH Troubleshooting
• Repair Instructions
  • Drive Belts: Exploded View
  • Checking Drive Belts
  • Drive Belts: Adjustment
  • Drive Belts: Removal and Installation
    • Removal
    • Installation
  • Drive Belt Auto Tensioner and Idler Pulley: Removal and Installation
    • Notes
    • Removal
    • Installation
  • Air Cleaner Filter: Removal and Installation
    • Removal
    • Installation
  • Camshaft Valve Clearance
    • Inspection
    • Adjustment
  • Compression Pressure
    • Checking Compression Pressure
  • Air Cleaner and Air Duct: Exploded View
  • Air Cleaner and Air Duct: Removal and Installation
    • Notes
    • Removal
    • Inspection After Removal
    • Installation
  • Intake Manifold: Exploded View
  • Intake Manifold: Removal and Installation
    • Notes
    • Removal
    • Installation
      • Notes
      • Intake Manifold and Fuel Tube Protector
      • Electric Throttle Control Actuator
    • Inspection After Installation
  • Rocker Cover: Exploded View
  • Rocker Cover: Removal and Installation
    • Removal
    • Installation
  • Intake Valve Timing Control: Intake Valve Timing Control Solenoid Valve
    • Removal
    • Installation
  • Timing Chain: Exploded View
  • Timing Chain: Removal and Installation
    • Removal
    • Inspection After Removal
      • Timing Chain
      • Balancer Unit Bolt Outer Diameter
      • Balancer Unit Bolt Length
    • Installation
    • Inspection After Installation
  • Camshaft: Exploded View
  • Camshaft: Removal and Installation
    • Notes
    • Removal
    • Inspection After Removal
      • Camshaft Runout
      • Camshaft Cam Height
      • Camshaft Journal Oil Clearance
        • Camshaft Journal Diameter
        • Camshaft Bracket Inner Diameter
        • Camshaft Journal Oil Clearance
      • Camshaft End Play
      • Camshaft Sprocket Runout
      • Valve Lifter
      • Valve Lifter Clearance
        • Valve Lifter Outer Diameter
        • Valve Lifter Hole Diameter
        • Valve Lifter Clearance
    • Installation
    • Inspection After Installation
      • Inspection of Camshaft Sprocket (INT) Oil Groove
  • Valve Oil Seal: Removal and Installation
    • Removal
    • Installation
  • Front Oil Seal: Removal and Installation
    • Removal
    • Installation
  • Rear Oil Seal: Removal and Installation
    • Removal
    • Installation
  • Cylinder Head: Exploded View (1)
  • Cylinder Head: Removal and Installation
    • Removal
    • Inspection After Removal
      • Cylinder Head Bolts Outer Diameter
      • Cylinder Head Distortion
    • Installation
    • Inspection After Installation
  • Cylinder Head: Exploded View (2)
  • Cylinder Head: Disassembly and Assembly
    • Disassembly
    • Assembly
  • Cylinder Head: Inspection After Disassembly
    • Valve Dimensions
    • Valve Guide Clearance
      • Valve Stem Diameter
      • Valve Guide Inner Diameter
      • Valve Guide Clearance
    • Valve Guide Replacement
    • Valve Seat Contact
    • Valve Seat Replacement
    • Valve Spring Squareness
    • Valve Spring Dimensions And Valve Spring Pressure Load
  • Engine Assembly: Exploded View
  • Engine Assembly: Removal and Installation
    • Notes
    • Removal
    • Installation
    • Inspection After Installation
  • Engine Unit: Exploded View
  • Engine Unit: Disassembly and Assembly
    • Disassembly
    • Assembly
  • Engine Unit: Inspection After Disassembly
    • Crankshaft End Play
    • Connecting Rod Side Clearance
    • Piston To Piston Pin Oil Clearance
      • Piston Pin Hole Diameter
      • Piston Pin Outer Diameter
      • Piston to Piston Pin Oil Clearance
    • Piston Ring Side Clearance
    • Piston Ring End Gap
    • Connecting Rod Bend And Torsion
    • Connecting Rod Big End Diameter
    • Connecting Rod Bushing Oil Clearance
      • Connecting Rod Bushing Inner Diameter
      • Piston Pin Outer Diameter
      • Connecting Rod Bushing Oil Clearance
    • Cylinder Block Distortion
    • Main Bearing Housing Inner Diameter
    • Piston To Cylinder Bore Clearance
      • Cylinder Bore Inner Diameter
      • Piston Skirt Diameter
      • Piston to Cylinder Bore Clearance
      • Re-boring Cylinder Bore
    • Crankshaft Main Journal Diameter
    • Crankshaft Pin Journal Diameter
    • Out-Of-Round And Taper Of Crankshaft
    • Crankshaft RUNOUT
    • Connecting Rod Bearing Oil Clearance
      • Method by Calculation
      • Method of Using Plastigage
    • Main Bearing Oil Clearance
      • Method by Calculation
      • Method of Using Plastigage
    • Main Bearing Crush Height
    • Connecting Rod Bearing Crush Height
    • Lower Cylinder Block Mounting Bolt Outer Diameter
    • Connecting Rod Bolt Outer Diameter
    • Movement Amount Of Flywheel (M/T Models)
      • Notes
      • Movement Amount of Thrust (Fore-and-Aft) Direction
      • Movement Amount in Radial (Rotation) Direction
    • Drive Plate (A/T Models)
  • How to Select Piston and Bearing
    • Description
    • How To Select Piston
      • When New Cylinder Block Is Used
      • When Cylinder Block Is Reused
      • Piston Selection Table
    • How To Select Connecting Rod Bearing
      • When New Connecting Rod and Crankshaft Are Used
      • When Crankshaft and Connecting Rod Are Reused
      • Connecting Rod Bearing Selection Table
      • Connecting Rod Bearing Grade Table
      • Undersize Bearings Usage Guide
      • Bearing undersize table
    • How To Select Main Bearing
      • When New Cylinder Block and Crankshaft Are Used
      • When Cylinder Block and Crankshaft Are Reused
      • Main Bearing Selection Table (No. 1, 3 and 5 journals)
      • Main Bearing Selection Table (No. 2 and 4 journals)
      • Main Bearing Grade Table (All Journals)
      • Undersize Bearing Usage Guide
      • Bearing undersize table
• Specifications
  • Service Data and Specifications
    • Standard and Limit
      • General Specifications
      • Drive Belt
      • Exhaust Manifold And Three Way Catalyst Assembly
      • Spark Plug
      • Cylinder Head
      • Valve
        • Valve Timing
        • Valve Dimensions
        • Valve Clearance
        • Available Valve Lifter
        • Valve Spring
        • Valve Lifter
        • Valve Guide
        • Valve Seat
        • Valve Seal
    • Spark Plug Tube
      • Notes
      • Camshaft And Camshaft Bearing
      • Cylinder Block
      • Piston, Piston Ring And Piston Pin
        • Available Piston
        • Piston Ring
        • Piston Pin
      • Connecting Rod
      • Crankshaft
      • Main Bearing
        • Notes
        • Undersize
        • Bearing Oil Clearance
      • Connecting Rod Bearing
        • Notes
        • Undersize
        • Bearing Oil Clearance
• Special Tools and Equipment
  • Special Service Tool
  • Commercial Service Tool