Engine Mechanical:
Engine assembly, disassembly, tuning, timing, valve train, piston rings, crankshaft, connecting rods.
Engine Management:
Fuel injection systems (MPI), ignition systems, ECU (Engine Control Unit) diagnostics and parameters, emission control systems (EVAP, EGR).
Transmission Manual:
Service, repair, and overhaul of 5-speed and 6-speed manual transmissions.
Transmission Automatic:
Service, repair, and overhaul of 4-speed automatic transmissions (e.g., 4EAT), including hydraulic control, torque converter, and electronic control unit (TCU).
Drivetrain AWD:
Subaru Symmetrical All-Wheel Drive system (mechanical and electronic aspects), viscous coupling, transfer cases, differentials (front, center, rear).
Suspension:
Front and rear suspension systems (MacPherson struts, multi-link), wheel alignment specifications, component replacement (bushings, ball joints, shock absorbers).
Brakes:
Hydraulic brake systems (front and rear disc brakes), ABS (Anti-lock Braking System) diagnostics and components, parking brake.
Steering:
Power steering system (hydraulic pump, rack and pinion), steering column, tie rods.
Cooling System:
Radiator, cooling fan, water pump, thermostat, heater core, coolant specifications.
Fuel System:
Fuel pump, fuel filter, fuel injectors, fuel tank, fuel pressure specifications.
Electrical System:
Wiring diagrams, lighting, charging system (alternator, battery), starter motor, fuses, relays, power distribution.
HVAC:
Heating, Ventilation, and Air Conditioning system components and service.
Body Interior:
Interior trim, seats, dashboard, door panels, carpeting.
Body Exterior:
Body panels, bumpers, doors, windows, mirrors, latches, seals, and their adjustment and repair.
Chassis Body:
Frame and chassis structural components, rust prevention, jacking points.
Maintenance Schedule:
Detailed periodic maintenance schedules for oil changes, filter replacements, fluid checks, belt inspections, etc.
Troubleshooting Guides:
Systematic diagnostic procedures for common faults and symptoms.
Engine Rebuild:
Complete step-by-step instructions for engine disassembly, inspection, measurement, and reassembly.
Transmission Overhaul:
Detailed procedures for automatic and manual transmission rebuilds.
Brake Service:
Brake pad and rotor replacement, caliper service, brake fluid bleeding.
Suspension Repair:
Replacement of struts, shocks, control arms, bushings, and alignment procedures.
Electrical Diagnostics:
Use of multimeters, troubleshooting of charging and starting systems, lighting circuits.
Body Panel Replacement:
Procedures for removing and installing doors, fenders, hoods, etc.
HVAC Service:
Refrigerant handling, component replacement (compressor, condenser, evaporator).
Depth:
Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds, including electrical system diagnostics and bodywork.
Diagnostic Tools:
Information on using OBD-II scanners for engine diagnostics, potentially including Subaru-specific diagnostic codes and procedures.
Wiring Diagrams:
Detailed electrical schematics for all major systems.
Torque Specifications:
Precise torque values for all critical fasteners throughout the vehicle.
Clearances Tolerances:
Specifications for engine component clearances (piston-to-wall, bearing clearances, valve lash).
Engine Code:
EJ25 (2.5L Boxer)
Displacement:
2457 cc (2.5 Liters)
Configuration:
Horizontally-opposed, 4-cylinder, DOHC, 16 valves
Horsepower Naturally Aspirated:
Approx. 165-170 hp @ 5600-6000 rpm
Torque Naturally Aspirated:
Approx. 220-230 Nm @ 3600-4000 rpm
Horsepower Turbocharged (Gt):
Approx. 210-220 hp @ 5600 rpm (for GT models)
Torque Turbocharged (Gt):
Approx. 300-320 Nm @ 3600 rpm (for GT models)
Induction:
Multi-Point Fuel Injection (MPI)
Fuel Type:
Unleaded Petrol (Octane rating typically 91 RON or higher)
Emissions Control:
Catalytic Converter, EVAP system, EGR (Exhaust Gas Recirculation) on some models.
Oil Change Interval:
Typically every 10,000-15,000 km or 6-12 months, depending on driving conditions and oil type. Refer to manual for precise intervals.
Air Filter Replacement:
Every 30,000-50,000 km or as needed based on inspection.
Spark Plug Replacement:
Iridium spark plugs often last up to 100,000 km. Platinum or copper plugs have shorter intervals. Check manual for specific type and interval.
Timing Belt Replacement:
Crucial for EJ series engines. Typically 100,000 km or 5-7 years. Failure can cause catastrophic engine damage. **This is a critical maintenance item covered in detail.**
Engine Oil Type:
5W-30 or 5W-40 synthetic or semi-synthetic oil, meeting API SM or SN specifications. Check manual for exact viscosity and API rating.
Coolant Type:
Subaru Super Coolant (blue) or equivalent long-life silicate-free antifreeze (typically a 50/50 mix with distilled water).
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Head Gaskets:
While less prevalent than on some earlier Subaru models, head gasket leaks (particularly on EJ25D and early EJ25 SOHC) can occur. The manual will detail inspection and replacement procedures.
Automatic Transmission Issues:
Some automatic transmissions can experience wear or solenoid issues; regular fluid changes are essential. The manual covers troubleshooting these.
Wheel Bearings:
Can be prone to wear, especially in AWD vehicles operating in varied conditions. The manual covers replacement.
Cv Joints:
Dust boots can split, leading to CV joint failure. Regular inspection recommended. Manual shows replacement.