Engine:
Complete diagnostics, repair, and overhaul for M30 inline-6 and M60 V8 engines.
Fuel System:
Bosch Motronic fuel injection system, fuel pumps, injectors, pressure regulators.
Ignition System:
Electronic ignition systems, coil packs, spark plugs, timing.
Cooling System:
Radiator, water pump, thermostat, hoses, fan clutch, coolant specifications.
Exhaust System:
Catalytic converters, mufflers, exhaust manifolds, O2 sensors.
Transmission Manual:
Gearbox overhaul, clutch replacement, shift linkage adjustment.
Transmission Automatic:
ZF 4HP22/4HP24 repair, fluid changes, electronic control unit (ECU) diagnostics.
Drivetrain:
Driveshafts, universal joints, differential, axle shafts.
Suspension Front:
MacPherson struts, control arms, ball joints, bushings, alignment specifications.
Suspension Rear:
Multi-link independent suspension, shock absorbers, control arms, bushings, alignment.
Steering:
Power steering system, steering rack, steering column, components.
Brakes Front:
Vented disc brakes, calipers, brake pads, rotors, ABS system.
Brakes Rear:
Solid disc brakes, calipers, brake pads, rotors, ABS system.
Electrical System:
Wiring diagrams, fuse box layouts, relays, battery, alternator, starter.
Lighting System:
Headlights, taillights, interior lighting, bulb specifications.
Climate Control:
HVAC system, blower motor, refrigerant, AC compressor, heater core.
Body Exterior:
Body panel removal and installation, door mechanisms, trunk lid, hood.
Body Interior:
Seat removal, dashboard disassembly, trim panels, headliner.
Glass And Seals:
Windshield, side glass, rear glass replacement, seal maintenance.
Safety Systems:
Seat belts, SRS airbag system (early implementation), ABS diagnostics.
Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection.
Troubleshooting:
Diagnostic procedures for common faults, error code interpretation, symptom-based troubleshooting.
Repair:
Step-by-step instructions for component replacement and repair across all major vehicle systems.
Overhaul:
Detailed procedures for engine and transmission rebuilds.
Diagnostics:
Comprehensive diagnostic flowcharts and specifications for electrical and mechanical systems.
Wiring Diagrams:
Detailed electrical wiring diagrams for all vehicle circuits.
Depth:
Extremely comprehensive, covering from basic maintenance to complete component overhauls and advanced diagnostics.
Oil Change:
Typically every 7,500-10,000 miles (12,000-16,000 km) or annually, depending on driving conditions and oil quality used.
Spark Plugs:
M30: 30,000 miles (48,000 km) for standard plugs, M60: 60,000 miles (96,000 km) for platinum plugs.
Coolant Flush:
Every 2 years or 30,000 miles (48,000 km).
Engine Oil:
API SJ or higher, SAE 5W-30 or 10W-40 (check owner's manual for exact spec based on climate).
Transmission Fluid Auto:
BMW LT-3 or ZF Lifeguardfluid 5 (refer to manual for specific ZF type, often Dexron III compatible but check).
Brake Fluid:
DOT 4 recommended.
Cooling System:
Plastic coolant expansion tanks can become brittle and crack. Water pump impellers can degrade.
Electrical:
Wiring harness degradation (especially around engine bay), failed climate control modules, headlight leveling issues.
Suspension:
Worn control arm bushings and ball joints leading to steering looseness and uneven tire wear.
Engine M60:
Nikasil cylinder liner wear (on early M60B30/B40 engines), timing chain guides and tensioners can wear.
Automatic Transmission:
Solenoid issues and wear in ZF transmissions, especially with inadequate fluid maintenance.
