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Introduction
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Market Position
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Vehicle Class:
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Compact Sports Coupe / Grand Tourer
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Target Audience:
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Enthusiasts seeking to maintain, repair, or restore their Alfetta GTV.
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Competitive Analysis
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Key Competitors Era:
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BMW 3 Series (E21/E30), Porsche 924, Ford Capri, Toyota Celica, Datsun Z-cars.
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Key Features
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Design Philosophy:
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Stylish Italian design, rear-wheel drive, Alfa Romeo's renowned twin-cam engines, innovative transaxle layout.
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Manual Value Proposition:
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Comprehensive factory service data, enabling detailed and accurate maintenance and repairs, saving on professional labor costs.
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Manual Coverage
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Systems Covered
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Engine Mechanical:
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Detailed disassembly, assembly, overhaul, and troubleshooting for all engine variants.
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Engine Management:
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Ignition system, fuel injection systems (mechanical and early electronic), carburetor tuning, emission control systems.
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Transmission Manual:
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Service, repair, and overhaul of the transaxle (gearbox and differential).
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Transmission Automatic:
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Coverage for optional automatic transmissions (if applicable to the model years).
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Drivetrain:
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Propeller shaft, driveshafts, universal joints, clutch service and adjustment.
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Suspension:
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Front and rear suspension geometry, component replacement (bushings, ball joints, shock absorbers), alignment procedures.
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Steering:
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Steering box, linkages, power steering system (if equipped).
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Brakes:
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Front and rear brake system maintenance, overhaul, disc and pad replacement, hydraulic system bleeding, parking brake.
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Electrical System:
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Wiring diagrams, component testing (alternator, starter, battery), lighting, instrumentation, accessories.
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Body And Chassis:
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Body panel removal and installation, door mechanisms, glass, interior trim, chassis lubrication.
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Heating And Air Conditioning:
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HVAC system diagnosis and repair (if applicable).
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Fuel System:
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Fuel tank, fuel lines, fuel pump, filters, carburetor/injection system specifics.
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Cooling System:
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Radiator, water pump, thermostat, hoses, fan operation, coolant specifications.
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Procedures Included
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Routine Maintenance:
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Oil changes, filter replacements, spark plug service, fluid level checks, lubrication points.
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Troubleshooting Diagnostics:
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Step-by-step diagnostic procedures for common and uncommon problems across all systems.
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Component Replacement:
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Detailed instructions for replacing major and minor components.
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Overhaul Rebuilding:
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Comprehensive guides for rebuilding engines, transmissions, carburetors, and other major sub-assemblies.
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Alignment Adjustments:
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Wheel alignment specifications and adjustment procedures, carburetor and ignition timing adjustments.
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Electrical Diagnostics:
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Schematic interpretation, voltage drop testing, continuity testing, fault finding.
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Technical Depth
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Depth Of Information:
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Factory-level detail suitable for professional mechanics and experienced DIY enthusiasts.
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Illustrations:
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Hundreds of detailed photos, diagrams, and exploded views for clarity.
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Torque Specifications:
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Specific torque values for all critical fasteners and components.
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Clearances Tolerances:
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Factory specified clearances and tolerances for engine and drivetrain components.
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Engine Specifications
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Primary Engine
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Engine Family:
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Alfa Romeo Twin Cam (DOHC)
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Common Engine Variants:
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1.6L (1570cc), 1.8L (1779cc), 2.0L (1962cc) Petrol
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Performance 2.0L Approximate:
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Horsepower: 130-150 hp (depending on fuel injection/carburetion), Torque: 130-150 lb-ft
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Fuel System
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Fuel Delivery:
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Twin Dell'Orto carburetors (e.g., DHLA 40) or Bosch L-Jetronic fuel injection (later models).
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Fuel Type:
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Unleaded Gasoline (Octane rating appropriate for the era, 91-98 RON recommended)
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Engine Codes
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Common Engine Codes:
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105.21 (2.0L), 115.31 (1.6L), 115.18 (1.8L) - Note: Specific codes vary by market and sub-model.
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Maintenance
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Service Intervals
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Oil Change Interval Engine:
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Typically every 5,000-7,500 km (3,000-4,500 miles) or 6-12 months, depending on usage and oil type.
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Filter Replacement Oil:
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Replace with every oil change.
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Spark Plug Service:
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Inspect every 15,000-20,000 km (9,000-12,500 miles), replace as needed.
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Transmission Service:
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Check fluid level regularly. Change fluid and filter (if applicable) every 40,000-60,000 km (25,000-37,000 miles).
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Fluid Specifications
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Engine Oil Type:
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API SF/SG or higher, SAE 10W-40 or 15W-50 recommended for most conditions. Check manual for specific viscosity and API rating.
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Engine Oil Capacity:
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Approx. 4.5-5.0 liters (4.8-5.3 US quarts) with filter, depending on engine variant.
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Coolant Type:
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Ethylene Glycol based antifreeze, mixed 50/50 with distilled water.
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Brake Fluid Type:
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DOT 3 or DOT 4 (Check manual for exact specification).
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Known Issues
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Rust Prone Areas:
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Wheel arches, sills, floor pans, rear valence, around windows.
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Engine Maintenance Points:
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Timing belt (if applicable to variant, though most twin cams used chains), carburetor synchronization, ignition timing, valve adjustments (early models).
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Suspension Wear:
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Bushings, ball joints, and tie rod ends can wear over time, affecting handling and alignment.
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Electrical Gremlins:
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Older wiring harnesses can degrade, leading to intermittent electrical issues.
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Transaxle Issues:
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Clutch slave cylinder leaks, gearbox synchro wear, driveshaft U-joint wear.
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