🏷️ Basic Information Identification Make: BMW Model: 3 Series Chassis Code: E21 Covered Models: 315, 318, 318i, 320, 320i, 323i Codes Engine Codes Covered: M10 (1.6L, 1.8L, 2.0L, 2.3L) 👋 Introduction Market Position Target Audience: BMW E21 owners interested in DIY maintenance and repair, independent workshops. Competitive Analysis Value Proposition: Provides extensive, detailed repair information for a classic BMW model, enabling cost-effective maintenance and empowering enthusiasts. Key Features Diy Enablement: Designed to facilitate home repairs with clear instructions and diagrams. 📋 Manual Details Coverage Areas Manual Type: Service and Repair Manual Language: English File Format: PDF Compatible Operating Systems: All Versions of Windows & Mac Required Software: Adobe PDF Reader 📖 Manual Coverage Systems Covered General Maintenance: Yes Troubleshooting: Yes Engine Service Repair: Yes Transmission Service Repair: Yes Brake System: Yes Electrical System: Yes Suspension: Yes Wiring Diagrams: Yes Periodic Lubrication: Yes Steering: Yes Cooling System: Yes Fuel Injection Fuel System: Yes Emission System: Yes Heater Air Conditioning: Yes Engine Control System: Yes Chassis Body: Yes Restraint System: Yes Interior: Yes Differential Drive Axle: Yes Procedures Included Workshop Procedures: Detailed instructions and step-by-step diagrams for all workshop procedures Technical Depth Depth Of Coverage: Comprehensive for DIY and professional workshop use 📊 Manual Specifications File Format File Type: Digital Download (PDF) Print Quality Resolution And Clarity: High-resolution, suitable for printing specific sections or the entire manual. Binding Type Binding Method: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Family: BMW M10 Performance Engine Variants Covered: 1.6L, 1.8L, 2.0L, 2.3L (carbureted and fuel injected) Fuel System Fuel Delivery Methods: Carburetor (e.g., Solex, Zenith) and Bosch L-Jetronic / K-Jetronic fuel injection. 🔧 Transmission Standard Standard Transmission: 4-speed manual (e.g., Getrag 245) Optional Optional Transmission: 3-speed automatic (e.g., ZF 3HP18, 3HP22) Features Transmission Coverage: Service, repair, and maintenance procedures for both manual and automatic transmissions. 📐 Dimensions Exterior Body Styles: 2-door sedan, 4-door sedan Wheelbase: Approximately 2564 mm (100.9 inches) Weights Curb Weight: Varies by model, typically 1100-1300 kg (2425-2866 lbs) 🛡️ Safety Features Ratings Historical Safety Context: Reflects safety standards of its era; manual likely covers braking system diagnostics, suspension safety checks, and potentially seatbelt maintenance. Active Features Active Safety Coverage: Brake system (discs front, drums/discs rear depending on model), steering system. Passive Features Passive Safety Coverage: Restraint system (seatbelts), interior component checks. 💡 Technology Features Infotainment Infotainment Features Era: Basic analog radio, cassette player (optional). Manual would cover installation/removal and basic electrical diagnostics. Driver Assistance Driver Assistance Systems: None in the modern sense. Manual covers fundamental mechanical and electrical systems. 🔧 Maintenance Service Intervals General Interval Guidance: Manual would detail recommended intervals for oil changes, filter replacements, spark plugs, and fluid checks, typically based on mileage or time. Fluid Specifications Engine Oil Type: Likely recommends SAE 10W-40 or 20W-50, depending on climate and engine condition. Specific BMW approval numbers would be detailed. Coolant Type: Ethylene glycol based coolant, likely BMW blue or green coolant specification. Brake Fluid Type: DOT 3 or DOT 4. Transmission Fluid Type Manual: GL-4 gear oil, viscosity typically 75W-90 or 80W-90. Transmission Fluid Type Automatic: Dexron III or equivalent ATF (Automatic Transmission Fluid). Known Issues Common E21 Issues: Corrosion (especially wheel arches, sills), cooling system leaks (hoses, radiator), fuel system issues (carburetor or injection), aging electrical components, worn suspension bushings. Manual Diagnostic Utility: The manual's troubleshooting section is invaluable for diagnosing these common problems. 📚 Vehicle History Brand Heritage Bmw Philosophy: Introduction of the E21 marked BMW's move towards more compact, sporty sedans that balanced everyday usability with driving dynamics. Model Evolution E21 Generation: First generation of the BMW 3 Series, produced from 1975 to 1983. Replaced the highly successful BMW 02 series. Production Production Years: 1975-1983 Manufacturing Locations: Mainly Germany (Munich, Dingolfing), also South Africa and Thailand. 🏆 Awards & Recognition Recognitions Model Reputation: The E21 is widely recognized for its driving dynamics and established the 3 Series as a benchmark in its class. Ratings Enthusiast Appreciation: Highly regarded by BMW enthusiasts for its classic styling and engaging driving experience.