🏷️ Basic Information Identification Make: BMW Model: 3-Series Chassis Code: E30 Variant: 316i Model Years Covered: 1988, 1989, 1990, 1991 Codes Engine Code Common: M40B16 👋 Introduction Market Position Segment: Compact Executive Sedan/Coupe Target Audience: Enthusiasts, DIY mechanics, professional workshops Competitive Analysis Key Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Volvo 240/740 Key Features Chassis Design: Iconic E30 platform, known for driving dynamics and build quality Engine Variant: Fuel-injected inline-four, providing a balance of performance and efficiency Manual Value Proposition: Empowers owners to maintain and repair a classic BMW, preserving its value and performance 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Maintenance, Troubleshooting, Diagnostics Page Count Estimated Page Count: 300-400 Manual Type Manual Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete disassembly, inspection, assembly, timing, valve adjustment Engine Management: EFI (Electronic Fuel Injection), ignition system, sensors, actuators, DME (Digital Motor Electronics) diagnosis Transmission Manual: Removal, installation, clutch, gearbox overhaul Transmission Automatic: Removal, installation, torque converter, fluid service Drivetrain: Driveshafts, differential, axle shafts Suspension: Front and rear suspension components, shock absorbers, springs, bushings, alignment Steering: Steering rack, power steering system, steering column Brakes: Hydraulic system, ABS (Anti-lock Braking System) diagnosis, disc and drum brake service, parking brake Electrical System: Battery, charging system, starter motor, lighting, fuses, relays, wiring diagrams Bodywork: Body panel removal/installation, door mechanisms, glass, trim, corrosion prevention HVAC: Heating, ventilation, air conditioning system service and repair Interior: Seat removal, dashboard disassembly, interior trim Procedures Included Preventative Maintenance: Oil changes, filter replacements, fluid checks, spark plug replacement Troubleshooting Guides: Diagnostic flowcharts for common problems Component Replacement: Step-by-step instructions for replacing major and minor components Diagnostics: Fault code retrieval (OBD-I era, specific BMW codes), sensor testing, actuator testing Rebuilding Procedures: Engine and transmission overhaul guidelines Torque Specifications: Detailed torque values for all critical fasteners Special Tool Requirements: Identification of BMW-specific or equivalent tools needed for repairs Technical Depth Depth: Comprehensive: From basic maintenance to complete engine and transmission rebuilds Diagnostic Capability: Advanced diagnostics for EFI and electrical systems 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) Print Quality Searchability: Likely text-searchable if scanned from original digital files Image Resolution: High resolution for clear diagrams and illustrations Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: M40B16 Engine Type: Inline 4-cylinder, SOHC (Single Overhead Camshaft) Displacement: 1596 cc (1.6 Liters) Performance Horsepower: 98 hp @ 6000 rpm (approx.) Torque: 135 Nm (99 lb-ft) @ 4250 rpm (approx.) Fuel System Fuel Delivery: Bosch Motronic EFI (Electronic Fuel Injection) Fuel Type: Unleaded Gasoline (95 RON recommended) Engine Components Bore X Stroke: 81.0 mm x 77.6 mm Compression Ratio: 9.0:1 Lubrication Oil Capacity: 4.25 Liters (4.5 US Quarts) with filter Cooling System Coolant Capacity: 7.0 Liters (7.4 US Quarts) 🔧 Transmission Standard Transmission Type Standard: 4-speed Manual (Getrag 240) Optional Transmission Type Optional: 3-speed Automatic (ZF 4HP22) Features Clutch Type: Hydraulically actuated single dry plate Fluid Specifications Manual Transmission Fluid: API GL-4, SAE 75W-90 (e.g., BMW part # 8322 9 407 550) Automatic Transmission Fluid: BMW LT-3 (Dexron II equivalent) (e.g., BMW part # 8122 9 400 275) 📐 Dimensions Exterior Length: 4325 mm (170.3 in) Width: 1674 mm (65.9 in) Height: 1380 mm (54.3 in) Wheelbase: 2570 mm (101.2 in) Weights Curb Weight Manual: 1160 kg (2557 lbs) Curb Weight Automatic: 1190 kg (2624 lbs) 🛡️ Safety Features Ratings Crash Test Era: Tested under older, less stringent standards than modern vehicles Active Features ABS: Optional on some models, standard on later 1990-1991 E30s (Bosch 2-channel ABS) Passive Features Seatbelts: 3-point front seatbelts with pretensioners, 2-point rear seatbelts Headrests: Front headrests standard Body Structure: Reinforced safety cage, crumple zones 💡 Technology Features Infotainment Radio: Factory cassette/AM/FM radio, often with 4-6 speakers Display: Basic digital clock, odometer, and trip meter Driver Assistance ABS: Optional, as noted in safety section Connectivity Connectivity Features: None (basic analog systems) 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000-15,000 km (6,000-10,000 miles) or annually, depending on driving conditions Spark Plug Replacement: Every 40,000-60,000 km (25,000-37,000 miles) Timing Belt Replacement: Every 60,000-80,000 km (37,000-50,000 miles) or 5 years (critical for M40 engine) Fluid Specifications Engine Oil Specification: API SG or higher, SAE 10W-40 or 5W-40 (check manual for climate suitability) Coolant Specification: BMW Blue (Glysantin G48 equivalent), 50/50 mix with distilled water Brake Fluid Specification: DOT 3 or DOT 4 Known Issues Engine M40: Timing chain tensioner wear (on some M40 variants with chains, though M40 has a belt), oil leaks from valve cover gasket and oil pan gasket Suspension Bushings: Wear on control arm bushings, trailing arm bushings, and subframe bushings leading to vague handling and noise Electrical: Corrosion in wiring harnesses, failure of...