🏷️ Basic Information

Make:

BMW

Model:

3 Series

Model Code:

E30

Variant:

318i

Product Name:

BMW 318i E30 Service Repair Manual 1983-1991

👋 Introduction

Positioning:

The BMW E30 generation (1983-1991) represented a significant evolution for BMW's compact executive sedan, offering a blend of sportiness and practicality that appealed to a broad market segment. The 318i variant provided an accessible entry point into the premium sports sedan experience.

Competitors:

Competed against models like the Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, and various Japanese luxury sedans. The E30 was widely praised for its driving dynamics and build quality.

Vehicle Attributes:

Renowned for its balanced chassis, engaging driving experience, durable engineering, and iconic styling. The E30 became a benchmark for sporty compact sedans.

Benefit To Owner:

Empowers owners to perform essential maintenance and repairs, significantly reducing dealership service costs and extending the lifespan and reliability of their classic BMW 318i.

📋 Manual Details

Covered Years:

1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991

Covered Models:

All E30 318i Sedan (E30/4), Coupe (E30/2), Convertible (E30/2C)

Estimated Pages:

Approximately 1500-2000 (This is a common range for comprehensive workshop manuals of this era, actual count may vary by edition/provider)

Type:

Comprehensive Workshop Service and Repair Manual

Language:

English

Format:

Digital Download (PDF)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, disassembly, diagnosis, overhaul, cylinder head, crankshaft, pistons, connecting rods, lubrication system, cooling system, valve train

Engine Management:

Fuel injection (Bosch L-Jetronic / Motronic), ignition system, emission controls, sensors, actuators, troubleshooting

Transmission:

Manual transmission (Getrag 260), automatic transmission (ZF 4HP22), removal, installation, repair, fluid specifications

Drivetrain:

Clutch system, driveshaft, differential, rear axle assembly, wheel bearings

Suspension:

Front suspension (MacPherson struts), rear suspension (semi-trailing arms), components, alignment specifications, troubleshooting

Steering:

Steering system, power steering system, steering gear, steering column, troubleshooting

Brakes:

Front disc brakes, rear drum brakes (on some early models) or disc brakes, hydraulic system, ABS (if equipped), components, bleeding procedures

Electrical System:

Battery, charging system (alternator), starting system, lighting, instrumentation, wiring diagrams, fuse box layouts, component testing

Body And Chassis:

Body panels, doors, windows, interior trim, seats, bumpers, rust prevention, chassis lubrication

Heating Ventilation Air Conditioning:

HVAC system components, refrigerant handling (R12), troubleshooting

Fuel System:

Fuel tank, fuel pump, fuel lines, fuel filter, injection components

Preventive Maintenance:

Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement, brake inspection, tire rotation

Troubleshooting:

Diagnostic flowcharts, symptom-based troubleshooting guides, common fault identification

Engine Repair:

Complete engine rebuilds, head gasket replacement, timing belt/chain adjustment, piston ring replacement

Transmission Repair:

Manual gearbox overhaul, automatic transmission service and repair

Brake Repair:

Brake pad/shoe replacement, caliper/wheel cylinder overhaul, brake line replacement, ABS system diagnostics

Suspension And Steering Repair:

Shock absorber/strut replacement, ball joint replacement, tie rod end replacement, power steering pump/rack repair

Electrical Diagnostics:

Wiring diagram interpretation, component testing with multimeter, starter/alternator testing

Bodywork:

Panel replacement, dent repair, rust treatment guidance

Routine Maintenance:

Oil, filter, spark plugs, fluids, belts, hoses, exhaust system inspection

Depth Level:

Comprehensive: Covers everything from basic scheduled maintenance to complex engine and transmission overhauls, electrical diagnostics, and bodywork.

Diagnostic Tools:

Guidance on using common tools, troubleshooting charts, and specific diagnostic procedures for engine management systems.

Rebuild Procedures:

Detailed step-by-step instructions for engine, transmission, differential, and other major component rebuilds.

📊 Manual Specifications

File Type:

PDF

Searchability:

Typically searchable text, allowing for quick navigation to specific topics.

Resolution:

High-resolution scans suitable for viewing on screen and printing.

Binding:

N/A (Digital Download)

Paper Quality:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Code Early:

M10B18 (for early 318i models)

Engine Code Late:

M40B18 (for later 318i models, introduced around 1987/88)

Displacement Liters M10:

1.8 L

Displacement Cc M10:

1766 cc

Displacement Liters M40:

1.8 L

Displacement Cc M40:

1796 cc

Horsepower M10:

105 hp (approx.) @ 5800 rpm

Torque M10:

107 lb-ft (approx.) @ 3250 rpm

Horsepower M40:

113 hp (approx.) @ 5500 rpm

Torque M40:

119 lb-ft (approx.) @ 3250 rpm

Fuel Delivery:

Bosch K-Jetronic (CIS) mechanical fuel injection (M10) / Bosch Motronic ML4.1 (M40)

Fuel Type:

Unleaded Gasoline (Premium Recommended)

Configuration:

Inline 4-cylinder

Block Material:

Cast Iron

Head Material:

Aluminum Alloy

Valvetrain:

SOHC (Single Overhead Camshaft)

🔧 Transmission

Type Standard:

Getrag 260 5-speed Manual Transmission

Type Optional:

ZF 4HP22 4-speed Automatic Transmission

Clutch Type:

Hydraulically operated single dry plate clutch

Transmission Fluid Manual:

BMW MTF LT-1 or equivalent (e.g., Pentosin M-G)

Transmission Fluid Automatic:

ATF Dexron III or equivalent (check specific model year)

📐 Dimensions

Wheelbase:

2570 mm (approx.)

Length:

4340 mm (approx. Sedan)

Width:

1670 mm (approx.)

Height:

1380 mm (approx. Sedan)

Curb Weight Manual:

Approximately 1200-1250 kg

Curb Weight Automatic:

Approximately 1220-1270 kg

Gross Vehicle Weight Rating:

Typically around 1700 kg

Towing Capacity:

Consult owner's manual or local regulations; generally not recommended for heavy towing.

🛡️ Safety Features

Crash Test Era:

E30 was designed before modern standardized crash testing protocols (like NHTSA's 5-star system), but was considered a very safe vehicle for its time.

ABS Availability:

Optional on some models, standard on later models.

Traction Control:

Not typically available on 318i models of this era.

Airbags:

Driver airbag became available as an option in later years, not standard on most early E30s.

Seatbelts:

Three-point inertia-reel seatbelts front and rear.

Crumple Zones:

Designed with front and rear crumple zones for improved crash energy management.

💡 Technology Features

Audio System:

Factory cassette or AM/FM radio, often with limited speaker configurations. Aftermarket head units are common upgrades.

Climate Control:

Manual climate control with fan speed, temperature selection, and air direction. Optional air conditioning (often R12 refrigerant).

Cruise Control:

Optional feature on some models.

Connectivity Features:

Minimal by modern standards; primarily focused on the mechanical and electrical integrity of the vehicle.

🔧 Maintenance

Oil Change Interval:

Every 5,000-7,500 miles or 6-12 months, whichever comes first (depending on driving conditions and oil type).

Air Filter Replacement:

Every 15,000-30,000 miles or as needed, depending on dusty conditions.

Spark Plug Replacement:

Every 30,000 miles for standard plugs, or as per manual recommendations for specific plug types.

Coolant Flush:

Every 2-3 years or 30,000-50,000 miles.

Brake Fluid Flush:

Every 2 years regardless of mileage.

Engine Oil Type:

SAE 15W-40 or 10W-40 (API SF/SG rated) or synthetic equivalent. Check manual for precise recommendations.

Engine Oil Capacity:

Approximately 4.5 Liters (with filter) for M10, 4.0 Liters (with filter) for M40.

Coolant Type:

Ethylene glycol based antifreeze (e.g., BMW Blue or G48 equivalent) mixed 50/50 with distilled water.

Power Steering Fluid:

ATF Dexron III or CHF 11S depending on system variant (check manual).

Rust:

Common rust areas include wheel arches, rocker panels, jack points, and rear shock towers. Thorough inspection and treatment are crucial.

Cooling System:

Plastic coolant expansion tanks can become brittle and crack; hoses can degrade over time. Water pumps and thermostats are also common replacement items.

Fuel Lines:

Rubber fuel lines can degrade, leading to leaks or fuel delivery issues. M10 K-Jetronic systems can have issues with the Air Flow Meter or Warm Up Regulator.

Suspension Bushings:

Rubber bushings (e.g., control arm bushings, trailing arm bushings) wear out, leading to degraded handling and noise.

Electrical Connectors:

Corrosion or looseness in electrical connectors can cause intermittent issues with various systems.

📚 Vehicle History

Bmw Legacy:

BMW's reputation for building driver-focused, well-engineered vehicles is deeply rooted. The '3 Series' designation signifies the brand's core compact executive car line.

E30 Introduction:

Introduced in 1982 (as a 1983 model year in North America), the E30 replaced the highly successful E21 3 Series. It was characterized by its more upright, angular styling and improved interior space.

E30 Variants:

The E30 platform was incredibly versatile, spawning numerous body styles (sedan, coupe, convertible, touring wagon) and engine configurations, including the iconic M3.

Production Years Global:

1982-1991

Manufacturing Locations:

Primarily Dingolfing, Germany, with some assembly in other locations globally.

E30 Significance:

The E30 is considered by many enthusiasts to be one of the best-driving BMWs ever produced, solidifying the brand's performance credentials.

🏆 Awards & Recognition

Contemporary Reviews:

The E30 generation was consistently lauded by automotive journalists for its superb handling, responsive steering, and overall driver engagement, often outperforming competitors in head-to-head comparisons.

Enthusiast Acclaim:

The E30 remains a highly sought-after classic BMW by enthusiasts worldwide, appreciated for its analogue driving experience and potential for modification.

Reliability Reputation:

Known for robust mechanicals when properly maintained, though age-related wear and tear are factors for all vehicles of this vintage. The M10 engine, in particular, is legendary for its durability.