Engine Mechanical:
Engine assembly, cylinder head, crankshaft, pistons, connecting rods, lubrication system, cooling system, timing systems (belt/chain), engine diagnostics.
Engine Performance:
Fuel injection system (EFI), ignition system, emission control systems (ECS), turbocharging (if applicable), diagnostics and troubleshooting of engine performance issues.
Transmission Manual:
Clutch system, manual transmission internal components, shift mechanisms, lubrication, diagnostics, and repair.
Transmission Automatic:
Automatic transmission internal components, torque converter, hydraulic control systems, electronic control unit (ECU) integration, diagnostics, and repair.
Drivetrain:
Driveshafts, CV joints, differentials, transaxle, wheel bearings, diagnostics and repair.
Suspension:
Front and rear suspension components (struts, shocks, control arms, bushings, springs), steering linkage, alignment specifications, diagnostics, and repair.
Brakes:
Hydraulic brake system, disc brakes (front/rear), drum brakes (rear if applicable), ABS system (if equipped), brake fluid specifications, bleeding procedures, diagnostics, and repair.
Steering:
Power steering system, steering column, steering rack/gearbox, steering fluid specifications, diagnostics, and repair.
Electrical System:
Battery, charging system (alternator, starter), lighting system, ignition system, power distribution, fuses, relays, diagnostics.
Body And Frame:
Body panel removal/installation, door mechanisms, glass, interior trim, underbody, rust prevention, structural repair basics.
HVAC:
Heating, ventilation, and air conditioning (HVAC) system components, refrigerant types, charging procedures, diagnostics, and repair.
Interior:
Seats, dashboard, instrument panel, carpeting, sound insulation, safety restraint systems (SRS - airbags if applicable).
Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection and replacement, brake pad replacement, tire rotation.
Diagnostics:
Step-by-step troubleshooting guides for common and uncommon issues, symptom-based diagnostics, wiring diagram interpretation, diagnostic connector access.
Repair:
Detailed instructions for component removal, disassembly, cleaning, inspection, repair, reassembly, and installation.
Overhaul:
Complete engine rebuild procedures, transmission overhaul, brake caliper rebuilding, power steering pump rebuilding.
Adjustments:
Valve adjustments, ignition timing adjustments, throttle cable adjustments, clutch adjustments.
Wiring Schematics:
Comprehensive wiring diagrams for all major systems, including engine control, chassis electrical, lighting, and accessories.
Depth Of Information:
Factory-level detail, suitable for professional technicians and advanced DIY enthusiasts.
Diagnostic Tools:
Information on diagnostic connectors, potential use of basic scan tools (OBD-I era), and multimeter usage.
Engine Options Covered:
Likely covers both 4-cylinder (e.g., F8, FE series) and V6 (e.g., KL series) engines, depending on specific MX-6 and 626 models within the 1990-1992 range.
Typical Horsepower Range:
Approx. 110-140 hp for 4-cylinder, 160-170 hp for naturally aspirated V6, and up to 200+ hp for turbocharged V6 variants (e.g., MX-6 GT).
Typical Torque Range:
Approx. 120-130 lb-ft for 4-cylinder, 150-160 lb-ft for V6.
Fuel Delivery:
Electronic Fuel Injection (EFI) with multi-point injection (MPI) or sequential electronic fuel injection (SEFI).
ECU Type:
Proprietary Mazda Engine Control Unit (ECU) managing fuel, ignition, and emissions.
Standard Transmission Type:
5-speed manual transmission.
Optional Transmission Type:
4-speed automatic transmission.
All Wheel Drive Availability:
All-wheel drive (AWD) was an option on some 626 models (e.g., 626 GT-X AWD).
Manual Transmission Fluid:
API GL-4 or GL-5 gear oil, viscosity typically 75W-90.
Automatic Transmission Fluid:
Dexron II or equivalent automatic transmission fluid.
Oil Change Interval:
Typically every 3,000-5,000 miles (5,000-8,000 km) or 3-6 months, depending on driving conditions.
Spark Plug Replacement Interval:
Around 30,000-60,000 miles (50,000-100,000 km), depending on plug type (copper vs. platinum).
Timing Belt Replacement Interval:
Crucial for interference engines; typically 60,000-90,000 miles (100,000-150,000 km).
Engine Oil Specification:
API SG or SH rated, viscosity typically 5W-30 or 10W-30, depending on climate.
Coolant Specification:
Ethylene glycol-based antifreeze, typically a 50/50 mix with distilled water. Specific Mazda coolant type recommended.
Brake Fluid Specification:
DOT 3 or DOT 4 brake fluid.
Common Issues Early Models:
Potential for distributor seal leaks, minor oil leaks from valve cover gaskets, catalytic converter issues, automatic transmission solenoid failures, rust in wheel wells and rocker panels.
Common Issues Late Models:
More robust engines, but cooling system maintenance is vital. Fuel injector clogging on some older EFI systems.
