🏷️ Basic Information

Make:

Mazda

Engine Family:

B6-DOHC

Engine Code:

B6-DOHC

👋 Introduction

Target Audience:

DIY enthusiasts, professional technicians, Mazda owners seeking to perform maintenance and repairs

Advantage:

Directly sourced from manufacturer, providing accuracy and completeness comparable to or exceeding shop manuals; digital format offers immediate access and cost savings on repairs.

Feature 1:

Comprehensive diagnostic and repair information

Feature 2:

Detailed diagrams, illustrations, and photos

Feature 3:

Step-by-step repair procedures with detailed substeps and safety notes

Feature 4:

Troubleshooting guides and electrical system service procedures

Feature 5:

Instant download delivery

📋 Manual Details

Applicable Models:

All Mazda models equipped with the B6-DOHC engine

Applicable Generations:

Encompasses all generations and variations of vehicles utilizing the B6-DOHC engine

Applicable Trims:

All trim levels and configurations

Applicable Transmissions:

All transmission types (manual and automatic) paired with the B6-DOHC engine

Estimated Pages:

Hundreds of pages (specific number not provided, but described as comprehensive)

Type:

Workshop Repair Service Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine Mechanical:

Engine identification, general precautions, disassembly and assembly, engine body, servicing specifications, tightening torques, disassembling and servicing

Engine Fuel System:

Fuel system, fuel filter

Engine Cooling System:

Cooling system

Engine Exhaust System:

Exhaust system

Engine Electrical System:

Electrical system, alternator, regulator, wiring diagrams

Maintenance:

Maintenance check list, check and maintenance procedures

Diagnostics:

Troubleshooting procedures, electrical system diagnostics

Repair:

Step-by-step repair procedures for all covered systems, detailed substeps

Disassembly Assembly:

Complete engine disassembly and assembly procedures

Depth:

Professional-level diagnostic, repair, and maintenance information as used by local service/repair shops; includes critical specifications and detailed diagrams

Illustrations:

Hundreds of pages of diagrams, illustrations, drawings, and photos

Special Tools:

Information on required special tools for specific repairs

📊 Manual Specifications

Format:

PDF

Printability:

Full printable

Zoom Functionality:

Zoom IN/OUT enabled

Binding:

N/A (Digital Download)

Paper Type:

N/A (Digital Format)

Software Requirements:

Adobe PDF Reader, WinZip

Operating Systems:

All Versions of Windows & Mac

⚙️ Engine Specifications

Engine Code:

B6-DOHC

Engine Type:

Inline 4-cylinder, DOHC (Dual Overhead Camshaft)

Displacement:

Typically 1.6 Liters (1597 cc) - specific to model year and application

Horsepower Range:

Varies by application, generally between 110-140 HP (e.g., Miata NA, Escort GT)

Torque Range:

Varies by application, generally around 100-120 lb-ft

Fuel Delivery:

Electronic Fuel Injection (EFI), often multi-point injection (MPI)

Fuel Type:

Unleaded Gasoline

Block Material:

Cast Iron

Cylinder Head Material:

Aluminum Alloy

Bore X Stroke:

Typically 83.0 mm x 74.2 mm (specific to application)

Compression Ratio:

Varies, often around 9.4:1 to 10.0:1

🔧 Transmission

Type:

Various manual and automatic transmissions are compatible, depending on the vehicle application.

Type:

Specific transmission models (e.g., Mazda's F-series manual transmissions, various automatic transmissions) will be detailed in the manual based on vehicle fitment.

Clutch Type:

Single dry plate clutch (manual transmissions)

📐 Dimensions

Vehicle Application Dependent:

Dimensions are highly vehicle-specific. The B6-DOHC engine was used in various Mazda models like the Familia/323, MX-3, MX-5 (NA), and Escort/Capri. Exterior dimensions vary significantly between these models.

Engine Weight:

Engine weight varies but is generally in the range of 300-350 lbs (dry).

🛡️ Safety Features

Vehicle Dependent:

Safety ratings are tied to the specific vehicle model and year the B6-DOHC engine is installed in, not the engine itself. The manual focuses on mechanical and electrical systems for repair and maintenance.

Vehicle Dependent:

Not directly covered by engine manual. Focus is on mechanical systems.

Vehicle Dependent:

Not directly covered by engine manual. Focus is on mechanical systems.

💡 Technology Features

Vehicle Dependent:

Infotainment systems are vehicle-specific, not engine-specific. The manual focuses on the mechanical and electrical operation of the engine and its related systems.

Vehicle Dependent:

Driver assistance technologies are vehicle-specific. This manual is for engine systems and not automotive electronics beyond engine management.

Vehicle Dependent:

Connectivity features are vehicle-specific. The manual covers the engine's electrical system and wiring diagrams for its components.

🔧 Maintenance

Oil Change:

Typically every 5,000-7,500 miles or 6-12 months, depending on driving conditions. Refer to specific vehicle owner's manual for exact intervals.

Spark Plugs:

Replace every 30,000-60,000 miles, depending on spark plug type (copper, platinum, iridium). Manual will provide specific recommendations.

Timing Belt:

Crucial maintenance item. Typically requires replacement every 60,000-90,000 miles or 5-7 years due to being an interference engine. Manual will detail procedures and torque specs.

Engine Oil Type:

API SG/SH or higher, SAE 5W-30 or 10W-30 recommended. Manual will specify exact viscosity and API rating.

Engine Oil Capacity:

Approximately 3.5 - 4.0 liters (3.7 - 4.2 US quarts) with filter change. Manual will provide exact capacity.

Coolant Type:

Ethylene glycol-based coolant, typically a 50/50 mix with distilled water. Manual will specify Mazda-approved coolant or equivalent.

Transmission Fluid Type:

Varies by transmission type (manual or automatic). Manual will specify ATF or gear oil type and specifications.

Oil Leaks:

Common leak points include valve cover gasket, oil pan gasket, and crankshaft seals. Manual provides detailed seal replacement procedures.

Cooling System:

Overheating can occur due to thermostat failure, water pump issues, or radiator blockage. Manual details diagnostic steps and component replacement.

Timing Belt Failure:

Critical to replace as scheduled; failure can lead to severe engine damage due to interference design. Manual emphasizes replacement intervals and procedures.

Ignition System:

Spark plug fouling, distributor issues, or coil pack failure can lead to misfires. Manual provides diagnostic troubleshooting for ignition components.

📚 Vehicle History

Mazda Engineering:

Mazda's history of producing reliable and engaging engines, often focusing on lightweight and compact designs for sporty handling.

B Series Engines:

The B-series engines, including the B6, are a long-standing line of Mazda inline-four engines known for their versatility and use across numerous global platforms.

Engine Production Years:

The B6-DOHC engine was produced and utilized across various Mazda models from the mid-1980s through the late 1990s.

Manufacturing Locations:

Manufactured by Mazda in Japan and potentially licensed production in other regions.

🏆 Awards & Recognition

Engine Reputation:

The B6 engine family is known for its robustness and performance in various sporting applications, particularly the B6-DOHC in the first-generation Mazda MX-5 Miata, contributing to its 'Car of the Year' accolades and widespread popularity.

Reliability:

Generally considered a reliable engine when properly maintained. The manual provides the necessary information to ensure this reliability.

Manual Certification:

Not applicable (manual is a service document, not a product certification).