🏷️ Basic Information Identification Make: BMW Model: 318i Year: 1989 Codes Chassis Code: E30 Engine Code Common: M40B18 👋 Introduction Market Position Segment: Compact Executive Sedan/Coupe Key Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Ford Sierra, Volvo 240 Series. Competitive Analysis Strengths: Renowned BMW driving dynamics, solid build quality, rear-wheel drive platform, upscale interior for its class. Key Features Platform: E30 platform, known for its robust chassis and excellent handling characteristics. Design: Iconic 'Bangle-era' BMW design with clean lines and a focus on driver ergonomics. 📋 Manual Details Coverage Areas Primary Coverage: Full Service and Repair Secondary Coverage: Maintenance, Troubleshooting, Rebuilding, Refurbishment, Restoration Page Count Estimated Page Count: 500+ Manual Type Type: Workshop Manual / Service Manual Language Language: English Format Format: Digital (Likely PDF) 📖 Manual Coverage Systems Covered Engine: Complete engine systems, including M40B18 engine overhaul, component diagnostics, fuel injection (Bosch Motronic), ignition system, cooling system, lubrication system. Transmission: Manual and Automatic Transmission service, repair, and overhaul. Clutch system, driveshafts, differential service. Brakes: Hydraulic brake system, ABS (if equipped), disc brake and drum brake service, fluid replacement, component replacement (calipers, master cylinder, lines). Suspension Steering: Front and rear suspension components (struts, control arms, bushings), steering system (rack and pinion), power steering, wheel alignment. Electrical: Complete electrical system, wiring diagrams, fuse box layout, lighting, starting and charging system, instrument cluster, diagnostics of common electrical faults. Body Chassis: Body panel repair, door mechanisms, glass replacement, interior trim removal/installation, chassis component servicing. Climate Control: HVAC system diagnosis and repair, A/C system servicing, heater core replacement. Procedures Included Maintenance: Scheduled maintenance, oil and filter changes, spark plug replacement, air filter replacement, coolant flush, brake fluid change. Repair: Engine rebuilds, transmission rebuilds, suspension component replacement, brake caliper rebuild, electrical component repair, bodywork repairs. Diagnostics: Troubleshooting guides for common problems, diagnostic procedures for engine performance, electrical faults, and drivability issues. Rebuilding: Detailed step-by-step instructions for rebuilding major components like the engine, transmission, and brake calipers. Technical Depth Depth: Comprehensive, from basic maintenance to full engine and transmission overhauls. Includes detailed torque specifications, tolerances, and diagnostic charts. 📊 Manual Specifications File Format Digital Format: PDF (Portable Document Format) - typically high-resolution, searchable text. Print Quality Quality Description: High-resolution digital scans or professionally formatted digital documents, ensuring clarity of text and diagrams. Binding Type Physical Binding: N/A (Digital Format) Paper Type Physical Paper: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Inline-4 Cylinder, DOHC (Double Overhead Camshaft) Engine Code: M40B18 Displacement: 1.8 Liters (1796 cc) Performance Horsepower: 113 hp @ 5600 rpm (approx.) Torque: 165 Nm (122 lb-ft) @ 4250 rpm (approx.) Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline (91 Octane or higher recommended) Cooling System Coolant Type: BMW Blue Coolant or compatible silicate-free ethylene glycol mixture. Lubrication System Oil Type Spec: API SG or ACEA A2/B2, SAE 15W-40 or 10W-40 (depending on climate). Consult manual for exact BMW specifications. Engine Construction Block Material: Cast Iron Head Material: Aluminum Alloy 🔧 Transmission Standard Type: 4-Speed Manual (Getrag 240) Optional Type: 4-Speed ZF Automatic Transmission Features Clutch Type: Single Dry Plate, Hydraulic Operation Fluid Specifications Manual Transmission Fluid: API GL-4, SAE 75W-90 or 80W-90 gear oil. Consult manual for BMW specifications. Automatic Transmission Fluid: BMW ATF Fluid or equivalent Dexron II (or later, consult manual). 📐 Dimensions Exterior Body Styles: 2-Door Sedan (E30 Coupe), 4-Door Sedan (E30 Sedan). Length: Approx. 4325-4340 mm (170.3-170.9 in) Width: Approx. 1645-1675 mm (64.8-66.0 in) Height: Approx. 1365-1370 mm (53.7-53.9 in) Weights Curb Weight: Approx. 1150-1200 kg (2535-2646 lbs) Wheelbase: Approx. 2570 mm (101.2 in) Wheels Tires Wheel Bolt Pattern: 5x120 mm Typical Tire Size: 185/70 HR14 or 195/60 HR14 🛡️ Safety Features Ratings NHTSA Ratings: Not consistently available for this era; early 1980s vehicles often lacked standardized testing. Active Features Braking System: Front ventilated discs, rear drums (standard). Optional ABS (Anti-lock Braking System) on some models. Passive Features Restraints: 3-point seatbelts, optional driver's airbag (late E30s). Body Structure: Reinforced safety cell, crumple zones front and rear. 💡 Technology Features Infotainment Audio System: Aftermarket head unit common due to age. Original systems typically featured AM/FM radio and cassette player. Speaker upgrades also frequent. Driver Assistance ABS: Optional on this model, offering improved braking stability. Connectivity Standard Features: Very limited by modern standards. Focus on mechanical and driving systems. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, depending on driving conditions and oil type used. Consult manual for precise recommendations. Spark Plug Replacement: Approximately every 20,000-30,000 miles (32,000-48,000 km). Timing Belt Replacement: The M40 engine uses a timing belt. Replacement recommended every 40,000-60,000 miles (64,000-96,000 km) or 4-5 years due to potential stretching/failure. Fluid Specifications Coolant Capacity: Approximately 7.5 Liters (7.9 Quarts) Engine Oil Capacity: Approximately 4.25 Liters (4.5 Quarts) with filter change. Known Issues Common...