🏷️ Basic Information Identification Make: BMW Model: 3 Series Model Variant: 325i, 325is Generation: E30 Codes Chassis Code: E30 Engine Codes: M20B25 (2.5L) 👋 Introduction Market Position Segment: Compact Executive Sports Sedan/Coupe Target Audience: Enthusiasts, DIY mechanics, owners seeking to maintain and repair their classic BMW. Competitive Analysis Key Competitors: Mercedes-Benz 190E, Audi 80/90, Ford Sierra XR4i, Alfa Romeo 75. Key Features Vehicle Reputation: Renowned for its sporty handling, balanced chassis, and driver engagement, defining the modern BMW driving experience. Manual Value Proposition: Essential resource for preserving and maintaining the performance and longevity of the E30 325i/325is. 📋 Manual Details Coverage Areas Years Covered: 1984, 1985, 1986, 1987, 1988, 1989, 1990 Page Count Estimated Page Count: Approximately 1000+ Manual Type Type: Full Service Repair Manual Language Language: English Format Format: Digital (likely PDF, Printable) 📖 Manual Coverage Systems Covered Engine: Comprehensive coverage of the M20B25 inline-six engine, including diagnostics, repair, and overhaul. Fuel System: Detailed information on Bosch Motronic fuel injection system, fuel pump, injectors, fuel lines, and pressure regulation. Ignition System: Coverage of the electronic ignition system, coil, distributor, spark plugs, and timing. Cooling System: Radiator, water pump, thermostat, coolant hoses, and fan assembly maintenance and repair. Exhaust System: Catalytic converter, muffler, exhaust manifold, and pipes diagnosis and replacement. Transmission Manual: Repair and overhaul procedures for the Getrag 260 5-speed manual transmission. Clutch system diagnosis and replacement. Transmission Automatic: Information on the ZF 4HP22 4-speed automatic transmission, including fluid changes and basic troubleshooting. Drivetrain: Driveshaft, CV joints, differential, and axle shaft service and repair. Suspension Front: MacPherson struts, control arms, ball joints, bushings, and anti-roll bar service. Suspension Rear: Trailing arms, shock absorbers, bushings, and spring replacement. Steering System: Power steering pump, rack and pinion, steering linkage, and wheel alignment procedures. Brakes Front: Disc brake rotor, caliper, pads, and brake line service. ABS system components if applicable. Brakes Rear: Drum brake (on some models) or disc brake caliper, pads, and parking brake mechanism. Electrical System: Wiring diagrams, fuse box layout, battery, alternator, starter, lighting, and accessories. Body And Frame: Panel removal and installation, body repair, door mechanisms, and interior trim. HVAC: Heater core, blower motor, A/C system components, and climate control adjustments. Troubleshooting: Diagnostic charts and procedures for common problems. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks, belt inspections. Engine Repair: Cylinder head removal/installation, piston and connecting rod service, crankshaft bearing replacement, timing chain/belt replacement. Fuel System Service: Fuel injector cleaning, fuel pump replacement, fuel pressure testing. Transmission Overhaul: Detailed steps for disassembling, inspecting, and reassembling manual and automatic transmissions. Brake System Repair: Brake pad/shoe replacement, caliper/wheel cylinder overhaul, brake line bleeding, ABS component replacement. Suspension Replacement: Strut, shock absorber, control arm, bushing, and ball joint replacement. Electrical Diagnostics: Using multimeters and oscilloscopes to diagnose electrical faults, starter/alternator testing. Body Panel Replacement: Procedures for replacing fenders, doors, hoods, and trunk lids. Climate Control Repair: Recharging A/C systems (with proper certification), replacing heater cores and blower motors. Technical Depth Depth: Extremely high. Covers everything from basic fluid changes to complete engine and transmission rebuilds. Diagnostic Level: Advanced diagnostics for mechanical, electrical, and fuel injection systems. Special Tools: Lists required special tools for specific repair procedures. 📊 Manual Specifications File Format File Type: Likely PDF Searchable Text: High likelihood of being text-searchable for quick information retrieval. Print Quality Print Readability: Designed for clarity and readability when printed. Binding Type Binding: Not applicable for digital format, but implies robust content for physical binding. Paper Type Paper Quality: Not applicable for digital format, but implies professional layout and illustration quality. ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Inline-Six Cylinder Displacement: 2.5 Liters (2494 cc) Bore X Stroke: 84.0 mm x 75.0 mm Compression Ratio: 8.8:1 or 9.1:1 (depending on year/market) Valve Train: SOHC (Single Overhead Camshaft), 12 Valves (2 per cylinder) Performance Horsepower Est: 168-171 hp @ 5800-6000 rpm Torque Est: 164-167 lb-ft @ 4300-4500 rpm Fuel System Fuel Delivery: Bosch Motronic ML-Jetronic (later L-Jetronic or LE-Jetronic on early models) Fuel Type: Premium Unleaded Gasoline (91+ Octane) Cooling System Coolant Capacity: Approximately 9.5 Liters (10 Quarts) 🔧 Transmission Standard Type: Getrag 260 5-Speed Manual Optional Type: ZF 4HP22 4-Speed Automatic Features Clutch Type: Hydraulically Actuated Single Dry Plate Fluid Specifications Manual Transmission Fluid: BMW MTF LT-2 or equivalent GL-4 rated gear oil (e.g., Red Line MTL) Automatic Transmission Fluid: Dexron III or equivalent ATF 📐 Dimensions Exterior Length: Approx. 170.5 inches (4331 mm) Width: Approx. 67.3 inches (1709 mm) Height: Approx. 54.9 inches (1395 mm) Weights Curb Weight Est: 2,700 - 2,900 lbs (1225 - 1315 kg) Wheelbase: Approx. 101.2 inches (2570 mm) 🛡️ Safety Features Ratings Crash Test Results: Older vehicle, no standardized NHTSA/IIHS ratings comparable to modern vehicles. Known for robust safety cage construction. Active Features ABS: Available on most models, standard on...