🏷️ Basic Information Identification Make: BMW Engine Family: N55 Codes Engine Code: N55 👋 Introduction Market Position Market Position: The BMW N55 engine is a highly regarded inline-six turbocharged engine found in a wide range of BMW models. This manual caters to owners and technicians seeking in-depth knowledge for maintenance and repair. Competitive Analysis Value Proposition: Provides a cost-effective alternative to dealership service by equipping users with factory-level repair information, detailed illustrations, and diagnostic procedures. Key Features Key Features: Detailed illustrations, diagrams, wiring schematics, step-by-step instructions, printable pages, comprehensive system coverage, suitable for all skill levels. 📋 Manual Details Coverage Areas Systems Covered: Engine Mechanical, Engine Electrical, Emission Control, Fuel System, Suspension, Clutch System, Manual Transaxle System, Automatic Transaxle System, Driveshaft and Axle, Steering System, Brake System, Body Interior and Exterior, Body Electrical System, Restraint System Page Count Estimated Page Count: Varies by specific model year and trim, typically between 1000-3000 pages for a complete workshop manual. Manual Type Manual Type: Workshop Service Repair Manual / Factory Service Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical System: Detailed coverage of engine block, cylinder head, valvetrain, crankshaft, connecting rods, pistons, lubrication system, cooling system, timing system (VANOS, Valvetronic), turbocharger system, intake and exhaust manifolds. Engine Electrical System: Comprehensive wiring diagrams, component locations, diagnostic procedures for engine control unit (ECU), sensors (crankshaft position, camshaft position, MAP, MAF, O2, knock), actuators (injectors, ignition coils), starter, alternator. Emission Control System: Information on catalytic converters, oxygen sensors, EGR system (if applicable), evaporative emission control system (EVAP), PCV system, and related diagnostic trouble codes (DTCs). Fuel System: Coverage of fuel pump, fuel filter, fuel injectors, high-pressure fuel pump (HPFP), fuel pressure regulator, fuel lines, and fuel tank components. Includes pressure specifications and diagnostic procedures. Suspension System: Front and rear suspension components, shock absorbers, springs, control arms, bushings, wheel bearings, alignment specifications, and troubleshooting. Clutch System: For manual transmission models: clutch disc, pressure plate, release bearing, clutch master and slave cylinders, hydraulic lines, and adjustment/replacement procedures. Manual Transaxle System: Gearbox components, shift linkages, synchronizers, bearings, seals, fluid specifications, and repair procedures for manual transmissions used with the N55 engine. Automatic Transaxle System: For automatic transmission models: transmission control unit (TCU), torque converter, planetary gear sets, clutch packs, valve body, transmission fluid specifications, and diagnostic/repair procedures. Driveshaft And Axle: Front and rear driveshafts, universal joints, CV joints, axle shafts, wheel hubs, and related components. Includes torque specifications and lubrication. Steering System: Power steering pump, steering rack, tie rods, steering column, and related components. Includes fluid specifications and alignment parameters. Brake System: Front and rear brake calipers, brake pads, brake rotors, brake fluid specifications, ABS system components, parking brake system, and bleeding procedures. Body Interior And Exterior: Body panels, doors, windows, locks, mirrors, bumpers, seating, interior trim, dashboard, HVAC system components, and cosmetic repair information. Body Electrical System: Lighting systems (headlights, taillights, interior lights), power windows, central locking, mirrors, wipers, horn, dashboard illumination, and fuse/relay information. Restraint: Airbag system components, seat belts, SRS module, and diagnostic procedures for the restraint system. Procedures Included Maintenance Procedures: Oil changes, filter replacements (oil, air, cabin, fuel), spark plug replacement, coolant flushes, brake fluid changes, transmission fluid changes, differential fluid changes, battery maintenance, drive belt inspection/replacement. Troubleshooting Diagnostics: Step-by-step diagnostic routines for common engine and vehicle issues, including DTC interpretation, sensor testing, actuator testing, and symptom-based troubleshooting. Repair Procedures: Detailed, illustrated instructions for component removal, installation, and repair for all major vehicle systems, including engine rebuilds, transmission overhauls, suspension component replacement, and electrical system repairs. Electrical System Repair: Specific instructions for diagnosing and repairing electrical faults using wiring diagrams, component testing, and circuit analysis. Technical Depth Technical Depth: Comprehensive, covering everything from basic maintenance to complex diagnostic and repair procedures, suitable for both DIY enthusiasts and professional mechanics. Includes torque specifications, clearances, and assembly sequences. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: Fully Printable, High-Resolution Illustrations and Diagrams Binding Type Binding Type: Digital (PDF), enabling on-demand printing of specific pages. Paper Type Paper Type: N/A (Digital Format) Zoom Functionality Zoom In Out: YES Requirements Software Requirements: Adobe PDF Reader, WinZip (for unzipping downloaded file) Compatibility Operating System Compatibility: All Versions of Windows & Mac Delivery Delivery Method: Instant Download ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-Cylinder, Twin-Scroll Turbocharged Engine Displacement: 3.0 Liters (2979 cc) Performance Horsepower Range: Typically ranges from 300 hp to 326 hp (depending on specific model and tune) Torque Range: Typically ranges from 300 lb-ft to 332 lb-ft (depending on specific model and tune) Fuel System Fuel Delivery System: Direct Injection (High-Pressure) Ignition System: Coil-on-plug ignition Engine Management Engine Control Unit Type: Bosch Motronic (specific variant depends on model year) Cooling System Cooling System Type: Water-cooled, Thermostatically controlled Lubrication System Oil Type Recommendation: Typically BMW Longlife-01...