Positioning:
A vital resource for owners and mechanics of the innovative Citroën GS/GSA, a car renowned for its advanced engineering and unique design.
Competitors:
Competed with vehicles like the Ford Escort, Opel Kadett, and Volkswagen Golf, but stood out with its hydropneumatic suspension and aerodynamic styling.
Design Philosophy:
Focus on aerodynamic efficiency, passenger comfort via hydropneumatic suspension, and innovative engineering.
Target Audience:
Professional technicians and dedicated DIY enthusiasts with a foundational understanding of automotive mechanics and electrics.
Engine Mechanical:
Detailed breakdown, assembly, and overhaul of the air-cooled flat-twin and flat-four engines.
Engine Management:
Ignition system, carburetion (Zenith, Solex, Stromberg), and fuel delivery systems.
Transmission System:
Manual gearbox, clutch operation, and drive shafts.
Hydropneumatic Suspension:
Operation, maintenance, and repair of Citroën's signature hydropneumatic suspension system, including fluid checks and sphere replacement.
Braking System:
Front disc brakes, rear drum brakes, handbrake mechanism, and hydraulic system.
Steering System:
Rack and pinion steering, steering column adjustments.
Electrical System:
Wiring diagrams, lighting, starter motor, alternator, battery, fuses, and dashboard instruments.
Body And Chassis:
Body panel removal and installation, door mechanisms, window regulators, interior trim.
Heating And Ventilation:
System operation and common maintenance points.
Routine Maintenance:
Oil changes, filter replacements, spark plug servicing, fluid level checks, and lubrication points.
Tune Up Procedures:
Ignition timing adjustments, carburetor adjustments, and general engine tuning.
Troubleshooting:
Diagnostic guides for common problems across all vehicle systems.
Disassembly And Assembly:
Step-by-step instructions for major component removal, repair, and reinstallation.
Engine Rebuilding:
Complete engine overhaul procedures, including piston ring replacement, bearing services, and cylinder head work.
Suspension Repair:
Detailed instructions for servicing suspension spheres, hydraulic fluid replacement, and general component checks.
Brake System Service:
Brake pad and shoe replacement, caliper and cylinder servicing, brake fluid bleeding.
Electrical Diagnostics:
Troubleshooting common electrical faults using wiring diagrams and testing procedures.
Depth:
Comprehensive, suitable for professional technicians and experienced DIY mechanics. Covers full rebuilds and complex diagnostics.
Engine Type 1971:
Air-cooled flat-twin (Boxer) engine
Displacement 1971:
1015 cc (approx. 62 cu in)
Bore Stroke 1971:
90 mm x 79 mm (approx.)
Horsepower 1971:
Approximately 54 hp SAE
Torque 1971:
Approximately 70 Nm (52 lb-ft) at 3000 rpm
Carburetor Type:
Typically a twin-choke Zenith 35 NDIX or similar
Later Engine Types:
Later models (GSA) featured a 1220 cc and 1300 cc flat-four engine.
Oil Change:
Typically every 5,000 km (3,000 miles) or 6 months, depending on usage.
Tune Up Interval:
Every 10,000-15,000 km (6,000-9,000 miles), including ignition and carburetion checks.
Engine Oil Grade:
SAE 20W-50 or 10W-30 (depending on climate, consult manual for exact specification)
Hydraulic Fluid:
LHM (Citroën's Green Hydraulic Fluid) - specific type for hydropneumatic systems.
Coolant Type:
Air-cooled, no coolant required.
Brake Fluid Type:
DOT 3 or DOT 4 (check manual for precise recommendation)
Hydropneumatic System:
Leaking suspension spheres, failing hydraulic pumps, or fluid degradation can affect ride height and comfort.
Engine Carburetion:
Carburetor tuning and sealing issues are common maintenance points.
Electrical Wiring:
Age-related degradation of wiring insulation and connectors can lead to electrical faults.
Citroen Innovation:
Citroën's legacy of automotive innovation, particularly in suspension and aerodynamics, is embodied in the GS/GSA.
Gs Introduction:
The Citroën GS was launched in 1970 and quickly became a popular model, known for its distinctive styling and advanced technology.
Gsa Introduction:
The GSA, an updated version with revised styling and interior, was introduced in 1980.
Production Period:
1970-1986 (GS and GSA combined)
Manufacturing Sites:
Primarily manufactured in France, with some assembly in other countries.
