The Suzuki J24B is a 2,393 cc, inline‑four naturally aspirated petrol engine produced between 2009 and 2019. It features a dual overhead camshaft (DOHC), 16‑valve layout with multi‑point fuel injection (MPFI), delivering 118–121 kW (160–165 PS) and 220–230 Nm of torque. Its cast‑iron block and aluminium head provide durability for midsize SUV applications.
Fitted primarily to the Suzuki Grand Vitara (J20/J24) and Kizashi, the J24B was engineered for smooth highway cruising and light off‑road capability. Emissions compliance was achieved through MPFI calibration, exhaust gas recirculation (EGR), and a three‑way catalytic converter, enabling Euro 5 compliance in European variants.
One documented concern is oil sludge accumulation in high‑heat or infrequent‑oil‑change conditions, noted in Suzuki Technical Service Bulletin TSB‑J24‑03. This issue stems from marginal crankcase ventilation efficiency under sustained load, leading to acid condensation and viscosity breakdown. From 2013, revised PCV routing reduced incidence.
Suzuki
Production years 2009–2012 meet Euro 4 standards; 2013–2019 models comply with Euro 5 depending on market (VCA UK Type Approval #VCA/EMS/6022).
The Suzuki J24B is a 2,393 cc inline‑four naturally aspirated petrol engine engineered for midsize SUVs and sedans (2009–2019). It combines DOHC valve actuation with multi‑point fuel injection to deliver linear power delivery and highway refinement. Designed to meet Euro 4 and Euro 5 emissions standards, it balances torque output with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,393 cc | |
| Fuel type | Petrol (Unleaded) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 86.0 mm × 103.0 mm | |
| Power output | 118–121 kW (160–165 PS) @ 5,500 rpm | |
| Torque | 220–230 Nm @ 4,000 rpm | |
| Fuel system | Multi‑point fuel injection (Denso) | |
| Emissions standard | Euro 4 (2009–2012); Euro 5 (2013–2019) | |
| Compression ratio | 9.7:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven DOHC | |
| Oil type | API SM/SN, SAE 5W‑30 | |
| Dry weight | 142 kg |
The J24B’s DOHC 16‑valve layout provides smooth power delivery ideal for highway cruising but requires disciplined oil maintenance to prevent sludge formation—especially in hot climates or stop‑start urban use. Use of API SM/SN 5W‑30 oil is essential to maintain viscosity under thermal stress. Fuel must meet minimum 91 RON; ethanol blends above E5 accelerate injector seal degradation. Post-2013 engines feature revised PCV routing and baffle design, significantly reducing sludge risk per TSB-J24-03.
Oil Specs: Requires API SM/SN specification (Suzuki Owner’s Manual 2011). ACEA standards not applicable.
Emissions: Euro 5 certification applies only to 2013–2019 European models (VCA Type Approval #VCA/EMS/6022). Earlier units meet Euro 4.
Power Ratings: Measured under JIS D 1001 standards. Output consistent across model years (Suzuki PT‑2017).
Suzuki Technical Information System (TIS): Docs J24B‑101, J24B‑102, J24B‑103
Suzuki Technical Service Bulletins: TSB‑J24‑03
VCA Type Approval Database (VCA/EMS/6022)
The Suzuki J24B was used across Suzuki's Grand Vitara/Kizashi platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations-reinforced mounts in the Grand Vitara J24 and modified intake manifolds in the Kizashi-and from 2013 the updated PCV system improved oil aeration control, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left side of the block near the oil filter adapter (Suzuki TIS J24B‑104). The 6th VIN digit indicates engine type ('B' for J24B). Early blocks (pre-2013) have a single PCV hose from the rocker cover; post-2013 units feature dual-stage oil separators with baffled breather. Fuel rail tag reads 'Denso MPI-2400'. Critical differentiation from J20A: J24B is 2.4L with 86.0 mm bore; J20A is 2.0L with 84.0 mm bore. Cylinder head casting number '11100‑71A00' denotes pre-TSB revision; '11100‑71B00' indicates updated PCV design.
The J24B's primary reliability risk is oil sludge formation under thermal stress or neglected maintenance, with elevated incidence in desert climates or high‑load use. Suzuki internal field reports from 2014 noted increased bearing wear in vehicles with >100,000 km and oil change intervals exceeding 10,000 km, while UK DVSA MOT data shows emissions test failures linked to EGR valve sticking in urban-driven examples. Oil quality and PCV function make sludge prevention critical.
Analysis derived from Suzuki technical bulletins (2011–2016) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about SUZUKI J24B.
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