🏷️ Basic Information

Make:

Renault

Model:

Megane & Laguna

Engine Type:

Petrol

Engine Code:

K4M (4-cylinder)

Megane Chassis Codes:

XA0B, XA04

Laguna Chassis Codes:

X561, X568

K4M Engine Variants:

K4M 700, K4M 701, K4M 720

👋 Introduction

Target Audience:

Professional mechanics, DIY enthusiasts, workshop technicians.

Value Proposition:

Provides in-depth technical knowledge for servicing and repairing the K4M engine efficiently.

Key Differentiator:

Highly specific to the K4M engine, offering detailed procedures often missing in generic manuals.

Feature 1:

Authoritative K4M engine repair data.

Feature 2:

Detailed diagnostic flowcharts.

Feature 3:

Clear, step-by-step repair instructions with diagrams.

📋 Manual Details

Manual Type:

Workshop Service Repair Manual

Primary Focus:

K4M Petrol Engine

Included Models:

Renault Megane, Renault Laguna

Estimated Page Count:

Refer to specific product listing for exact page count, typically 300-600 pages for comprehensive engine manuals.

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine Mechanical:

Cylinder head, block, pistons, crankshaft, camshafts, valve train, timing system.

Engine Lubrication:

Oil pump, oil filter, oil passages, oil cooler (if applicable).

Engine Cooling:

Radiator, water pump, thermostat, coolant passages, hoses, fan system.

Fuel System:

Fuel pump, injectors, fuel rail, pressure regulator, fuel filter, intake manifold.

Ignition System:

Spark plugs, ignition coils, wiring, crankshaft position sensor, camshaft position sensor.

Exhaust System:

Exhaust manifold, catalytic converter, muffler, oxygen sensors.

Engine Management System:

ECU (Engine Control Unit) functions, sensor inputs, actuator outputs, diagnostic trouble codes (DTCs).

Emission Control:

EGR system, EVAP system, secondary air injection (if applicable).

Maintenance:

Routine service checks, oil changes, filter replacements, spark plug replacement, belt replacement.

Troubleshooting:

Diagnostic procedures for common engine problems, symptom-based troubleshooting guides.

Repair:

Step-by-step instructions for engine component removal, overhaul, and reinstallation.

Overhaul:

Complete engine rebuild procedures, including internal component tolerances and specifications.

Disassembly Assembly:

Detailed procedures for dismantling and reassembling major engine sub-assemblies.

Timing Belt Replacement:

Specific procedures and timing marks for K4M engine timing belt service.

Injector Servicing:

Removal, testing, and installation of fuel injectors.

Cylinder Head Reconditioning:

Valve grinding, seal replacement, resurfacing procedures.

Depth Level:

Comprehensive, from basic maintenance to complete engine overhaul and diagnostics.

Diagnostic Information:

Includes information on DTC interpretation and targeted diagnostic steps.

Torque Specifications:

Detailed torque values for all critical engine fasteners.

Clearances Tolerances:

Specifications for bearing clearances, piston ring gap, valve lash, etc.

📊 Manual Specifications

Digital Format:

PDF (Portable Document Format)

Image Resolution:

High resolution for clarity of diagrams and text.

Searchability:

Searchable text for quick information retrieval.

Binding Type:

Not applicable for digital format; printable pages.

Paper Type:

Not applicable for digital format; can be printed on standard paper.

⚙️ Engine Specifications

Engine Name:

Renault K4M

Engine Configuration:

Inline 4-cylinder

Engine Displacement:

1.6 Liters (1598 cc)

Valve Train:

DOHC (Double Overhead Camshafts), 16 Valves (4 valves per cylinder)

Bore X Stroke:

79.5 mm x 80.5 mm (typical)

Compression Ratio:

10.0:1 (typical, may vary slightly by variant)

Horsepower Range:

Approximately 105-115 PS (77-85 kW) depending on variant and application.

Torque Range:

Approximately 145-150 Nm (107-111 lb-ft) depending on variant and application.

Fuel Type:

Unleaded Petrol (Gasoline)

Fuel Delivery:

Multi-point Fuel Injection (MPI) / Electronic Fuel Injection (EFI)

Ignition Type:

Electronic Ignition (Distributorless Ignition System - DIS, typically coil-on-plug or wasted spark)

🔧 Transmission

Standard Transmission:

Manual Transmission (e.g., 5-speed JC5, possibly PK variants)

Optional Transmission:

Automatic Transmission (e.g., DP0/AL4 4-speed automatic)

Clutch Type:

Hydraulic Actuated Dry Single Plate Clutch

Transmission Fluid Type:

Refer to specific vehicle model for exact specification (e.g., Dextron III/VI for automatics, specific manual gearbox oil).

📐 Dimensions

Vehicle Platforms Covered:

Megane (e.g., Phase 1/2 Hatchback, Estate), Laguna (e.g., Phase 1/2 Hatchback, Estate, Sport Tourer).

Exterior Dimensions:

Varies significantly by specific Megane and Laguna body styles (e.g., hatchback, sedan, estate). Manual covers engine installation context.

Curb Weight:

Varies by model and specification, typically 1200-1400 kg for Megane, 1350-1550 kg for Laguna.

🛡️ Safety Features

Euro Ncap Ratings:

Megane II achieved 5-star Euro NCAP. Laguna II achieved 5-star Euro NCAP. (Note: Manual focus is engine, but vehicle context implies these safety standards).

Active Safety Systems:

ABS with EBD, Brake Assist (often included on vehicles fitted with K4M).

Passive Safety Features:

Multiple airbags (front, side, curtain), seatbelt pre-tensioners, crumple zones.

💡 Technology Features

Infotainment Systems:

Basic radio/CD players, optional navigation systems (Carminat) depending on specific Megane/Laguna trim levels from the era.

Driver Assistance Features:

Cruise control, speed limiter (often available depending on trim).

Connectivity Options:

Limited by era; typically CD changer inputs, possibly early Bluetooth integration on later models.

🔧 Maintenance

Oil Change Interval:

Typically 15,000 km (9,000 miles) or 12 months, whichever comes first (refer to vehicle service book for exact interval).

Timing Belt Replacement Interval:

Crucial interval, typically 90,000 km (56,000 miles) or 5 years, due to interference engine design.

Spark Plug Replacement Interval:

Every 60,000 km (37,000 miles) for standard plugs, longer for iridium type.

Engine Oil Specification:

Typically Renault RN 0700 or RN 0710 compliant, SAE 5W-40 or 10W-40 (check manual for exact grade).

Coolant Specification:

Ethylene glycol-based antifreeze, Renault Type D (blue or red coolant) mixed 50/50 with distilled water.

Brake Fluid Specification:

DOT 4 (refer to specific vehicle service schedule for flush interval).

Power Steering Fluid Specification:

Refer to specific vehicle manual, typically Dexron III or specific Renault fluid.

Common Issue 1:

Timing belt failure due to age/mileage leading to catastrophic engine damage.

Common Issue 2:

Oil leaks, particularly from rocker cover gasket and crankshaft seals.

Common Issue 3:

Coil-on-plug ignition system failures leading to misfires.

Common Issue 4:

EGR valve clogging, leading to reduced performance and rough idling.

Common Issue 5:

Thermostat housing leaks or sticking.

📚 Vehicle History

Renault Heritage:

Renault is a French automobile manufacturer with a long history dating back to 1899, known for innovative designs and practical vehicles.

Megane Generation Context:

The K4M engine was commonly found in the second generation Megane (2002-2008) and variants of the first generation (e.g., Classic/Sedan).

Laguna Generation Context:

The K4M engine was introduced in the Laguna II (2000-2007), often as an entry-level petrol engine.

K4M Production Period:

Produced from late 1990s through to the mid-2010s, fitted across multiple Renault models.

🏆 Awards & Recognition

Vehicle Safety Recognition:

Both Megane II and Laguna II were highly rated by Euro NCAP (5 stars), reflecting significant safety advancements in their respective generations.

Engine Reliability General:

The K4M engine is generally considered robust and reliable when properly maintained, particularly regarding its core mechanical components. Key is adherence to the timing belt replacement schedule.

Emissions Standards:

Vehicles equipped with the K4M engine would comply with relevant Euro emissions standards of their production period (e.g., Euro 3, Euro 4).