Positioning:
The Citroen BX was positioned as a practical, comfortable, and innovative family hatchback, known for its distinctive styling and hydropneumatic suspension, competing in the European compact car segment.
Competitors:
Primary competitors included the Ford Escort, Volkswagen Golf, Peugeot 305/309, Renault 9/11, and Opel Kadett.
Distinctive Features:
Hydropneumatic suspension offering exceptional ride comfort and self-leveling capability, aerodynamic wedge-shaped design, and innovative use of materials for weight reduction.
Benefit:
Empowers owners to perform repairs and maintenance independently, saving money and ensuring quality work, while providing in-depth knowledge for all situations.
Primary Coverage:
All aspects of repair and maintenance for the 1986 Citroen BX
Specific Systems:
General Maintenance, Troubleshooting, Engine Service/Repair, Transmission Service/Repair, Brake System, Wiring Diagram, Electrical System, Suspension, Periodic Lubrication, Steering, Cooling System, Fuel Injection/Fuel System, Emission System, Engine Control System, Chassis/Body, Restraint System, Axle
Estimated Page Count:
Not specified, but comprehensive coverage suggests 500+ pages
Type:
Service and Repair Manual
Engine:
Detailed service, repair, troubleshooting, and maintenance procedures for all engines offered in the 1986 BX, including assembly/disassembly, component testing, and calibration.
Transmission:
Comprehensive coverage of manual and automatic transmission service, repair, fluid specifications, and troubleshooting.
Brakes:
In-depth information on hydraulic and braking systems, including ABS (if equipped), brake fluid specifications, component replacement, bleeding procedures, and troubleshooting.
Electrical:
Complete wiring diagrams, electrical component testing, troubleshooting of electrical faults, lighting systems, ignition system, charging system, and starter motor.
Suspension:
Detailed procedures for servicing the hydropneumatic suspension system (Citroen's signature feature), including height correction, fluid checks, component replacement, and troubleshooting.
Steering:
Service and repair for the steering system, including power steering fluid, components, and alignment procedures.
Cooling:
Maintenance, troubleshooting, and repair of the cooling system, including coolant specifications, radiator, thermostat, and fan operation.
Fuel System:
Information on fuel injection systems (e.g., Bosch L-Jetronic, K-Jetronic depending on engine variant), fuel pump, injectors, fuel filter replacement, and emissions control.
Chassis Body:
Body repair procedures, chassis structural information, door mechanisms, interior trim, and panel replacement.
Restraint System:
Information on seat belts and any early airbag systems if equipped for the model year.
Axles:
Service and repair for front and rear axles, including CV joints and bearings.
Maintenance:
Routine maintenance tasks, oil change procedures, filter replacements, lubrication points, and periodic inspections.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon faults, with symptom-based troubleshooting guides.
Repair:
Step-by-step instructions for component repair, replacement, and reassembly for all major vehicle systems.
Disassembly Reassembly:
Detailed guides for dismantling and reassembling various vehicle components and sub-assemblies.
Engine Rebuild:
Detailed procedures for engine disassembly, inspection of internal components (pistons, rings, bearings, crankshaft), cylinder head reconditioning, and reassembly with specified torque values.
Transmission Overhaul:
Comprehensive steps for transmission removal, disassembly, component inspection, replacement of worn parts (synchros, bearings, seals), and reassembly with correct clearances.
Depth:
Comprehensive, covering basic maintenance to complete engine and transmission rebuilds, including advanced diagnostic techniques and electrical system troubleshooting.
Diagnostic Tools:
The manual would likely cover the use of basic hand tools, multimeters for electrical diagnostics, and potentially specialized Citroen diagnostic equipment if applicable for that era.
Engine Options 1986:
Likely included 1.4L (Type TU3), 1.6L (Type XU5), and potentially 1.9L (Type XU9) petrol engines. Diesel options like the 1.8L (XUD7) were also common.
Horsepower Range:
Approximately 65 hp (1.4L) to 105 hp (1.9L GTi/TRi) depending on engine variant.
Torque Range:
Varies by engine, with torque figures typically ranging from 105 Nm to 155 Nm.
Fuel Delivery:
Fuel injection systems (e.g., Bosch L-Jetronic/K-Jetronic for petrol, indirect injection for diesel) and carburetor systems for base models.
Block Material:
Typically cast iron block with aluminum cylinder head.
Valve Train:
Overhead Valve (OHV) for older X-series or Single Overhead Cam (SOHC) for newer TU/XU engines.
Ignition Type:
Electronic ignition (e.g., distributor-based or distributorless ignition systems depending on engine).
Oil Change Interval:
Typically every 7,500-10,000 km or 6-12 months, depending on driving conditions and oil type.
Timing Belt Interval:
For engines with timing belts (e.g., XU series), intervals were often around 60,000-80,000 km, but this manual would provide the exact specification.
Engine Oil Spec:
Refer to manual for specific API/ACEA grades (e.g., API SF/SG, ACEA A1/A2). Viscosity grades like 10W-40 or 15W-40 were common.
Coolant Spec:
Ethylene glycol-based antifreeze mixture, typically a 50/50 blend with distilled water. Manual will specify type and capacity.
Brake Fluid Spec:
DOT 3 or DOT 4 brake fluid.
Suspension Fluid Spec:
Hydraulic mineral fluid (LHM - Liquide Hydraulique Minéral) specifically for Citroen hydropneumatic systems. Manual will specify grade and capacity.
Transmission Fluid Spec:
Manual transmission: GL-4 gear oil. Automatic transmission: DEXRON II or equivalent.
Common Problems:
Potential issues include hydropneumatic suspension leaks or pressure loss, corrosion on bodywork, ignition system component failures, and wear on suspension spheres.
Electrical Gremlins:
Citroens of this era can sometimes exhibit minor electrical faults due to age and complexity; the manual's wiring diagrams are crucial for diagnosis.