Engine Mechanical:
Complete engine assembly, disassembly, rebuilding, cylinder head, block, crankshaft, pistons, connecting rods, lubrication system, cooling system, timing belt, engine management system diagnostics.
Engine Performance:
Turbocharger system, intercooler, fuel injection system, ignition system, emissions control systems, performance tuning guidelines.
Transmission:
Manual transmission (5-speed), clutch system, gearbox disassembly and assembly, drivetrain components, differential, AWD system operation and maintenance.
Brakes:
Hydraulic brake system, ABS (Anti-lock Braking System) operation, diagnostics, front and rear brake caliper overhaul, brake rotor replacement, brake fluid specifications.
Suspension Steering:
Front and rear suspension components (struts, springs, control arms, stabilizer bars), power steering system, steering gear, wheel alignment procedures and specifications.
Electrical Electronics:
Complete wiring diagrams, fuse box layouts, battery system, starting and charging system, lighting system, instrumentation, ECU (Engine Control Unit) diagnostics, body control modules.
Body Chassis:
Body panel removal and installation, interior trim, door mechanisms, glass, bumpers, chassis lubrication, rust prevention.
Heating Ventilation Air Conditioning:
HVAC system operation, component testing, refrigerant handling, blower motor, air conditioning compressor, heater core, climate control diagnostics.
Routine Maintenance:
Oil change intervals and specifications, filter replacement (oil, air, fuel), spark plug replacement, coolant checks and flushes, brake pad replacement, tire rotation.
Troubleshooting:
Diagnostic trouble codes (DTCs), symptom-based troubleshooting charts, electrical system diagnostics, engine performance issues, transmission problems.
Engine Repair:
Head gasket replacement, piston ring replacement, bearing replacement, camshaft installation, timing belt replacement procedures, turbocharger rebuild.
Transmission Repair:
Clutch replacement, manual transmission overhaul, clutch hydraulic system bleeding, differential service, AWD coupling service.
Brake System Repair:
Brake caliper overhaul, brake hose replacement, master cylinder replacement, ABS component testing and replacement, brake fluid bleeding procedures.
Suspension Steering Repair:
Strut replacement, ball joint replacement, tie rod end replacement, power steering pump replacement, steering rack overhaul, wheel bearing replacement.
Electrical Diagnostics:
Wiring harness repair, component testing with multimeter, ECU reflash procedures, sensor testing, starter motor and alternator testing.
Diagnostic Tools:
Information on using OBD-II scanners (where applicable for the year range), multimeter usage, specific Subaru diagnostic connectors and procedures.
Torque Specifications:
Detailed torque values for all critical fasteners, including engine components, suspension parts, wheels, and body fasteners.
Schematics:
Comprehensive electrical wiring diagrams for all systems, vacuum hose routing diagrams, and schematic representations of mechanical systems.
Oil Change Interval:
Typically every 5,000-7,500 miles (8,000-12,000 km) or 6 months, whichever comes first. Performance driving may warrant more frequent changes.
Air Filter Replacement:
Every 15,000-30,000 miles (24,000-48,000 km) or as needed, depending on driving conditions.
Spark Plug Replacement:
Typically around 30,000-60,000 miles (48,000-96,000 km) depending on plug type (standard copper or platinum).
Timing Belt Replacement:
Crucial interval, typically every 60,000-90,000 miles (96,000-144,000 km) or 5-7 years. Failure causes catastrophic engine damage.
Engine Oil Type:
API SG/SH or higher, SAE 10W-30 or 10W-40 recommended. Check manual for specific viscosity based on climate.
Coolant Type:
Subaru Super Coolant (Blue) or equivalent long-life antifreeze/coolant.
Transmission Fluid Type Manual:
API GL-5 SAE 75W-90 gear oil.
Differential Fluid Type:
API GL-5 SAE 75W-90 gear oil (front and rear).
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Head Gaskets:
While more prevalent in later EJ25 engines, early EJ20 models can still be susceptible to head gasket leaks if overheated or poorly maintained. The manual will detail inspection and replacement.
Turbocharger Wear:
Turbocharger seals and bearings can wear over time, especially with aggressive driving or inadequate oil changes. Manual covers inspection and rebuild procedures.
Clutch Wear:
As with any manual performance car, the clutch is a wear item. Manual details clutch inspection and replacement.
Electrical Gremlins:
Aging wiring and connectors can lead to various electrical issues. Comprehensive wiring diagrams in the manual are essential.
