The Renault E7J 634 is a 1,390 cc, inline‑four petrol engine produced between 1996 and 2001. It features a single overhead camshaft (SOHC) and multi‑point fuel injection, delivering outputs around 55 kW (75 PS) and 114 Nm of torque. Its cast‑iron block construction provides durability for everyday urban and suburban driving.
Fitted primarily to the Renault Clio II (B/C57) and Twingo I (C06), the E7J 634 was engineered for economical, low‑maintenance motoring. It offere…
Production years 1996–2001 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/5678).
The Renault E7J 634 is a 1,390 cc inline‑four petrol engine engineered for supermini applications (1996-2001). It combines a robust cast‑iron block with multi‑point fuel injection to deliver economical and reliable urban performance. Designed to meet Euro 2 standards, it prioritizes simplicity and low running costs.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,390 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 75.8 mm × 77.0 mm | |
Power output | 55 kW (75 PS) @ 5,500 rpm | |
Torque | 114 Nm @ 3,000 rpm | |
Fuel system | Multi‑point fuel injection (Siemens) | |
Emissions standard | Euro 2 | |
Compression ratio | 9.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain‑driven | |
Oil type | Renault RN0700 or ACEA A3/B3 (SAE 10W‑40) | |
Dry weight | 98 kg |
The Renault E7J 634 was used across Renault's Clio II and Twingo I platforms with transverse mounting. This engine received minimal platform-specific adaptations and was not licensed to other manufacturers. All applications are documented in OEM parts catalogues.
The E7J 634's primary reliability risk is EGR valve clogging, with elevated incidence in urban, short-trip driving. Renault workshop data indicates this is a frequent cause of drivability complaints for high-mileage examples. Regular cleaning intervals and using quality fuel make preventative maintenance critical.
Analysis derived from Renault technical bulletins (1996-2001) and UK DVSA failure statistics (2000-2010). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
Yes, the E7J 634 is generally considered a robust and reliable engine for its era. Its simple SOHC design and cast-iron block contribute to longevity. Common issues like EGR clogging or ignition coil failure are typically inexpensive to fix. With regular oil changes and basic maintenance, these engines can easily surpass 200,000 km.
The most frequent issues are a clogged EGR valve causing rough running, failing ignition coils leading to misfires, faulty coolant temperature sensors affecting fueling, and oil leaks from the rocker cover gasket. These are well-documented in Renault service information.
The E7J 634 1.4L petrol engine was primarily used in the second-generation Renault Clio (B/C57, 1998-2001) and the first-generation Renault Twingo (C06, 1996-2000). It was fitted to base and mid-level trims like the Clio RN/RT and the standard Twingo 1.4.
Significant power gains are difficult due to its simple 8-valve SOHC design. Basic modifications like a performance air filter or exhaust system might yield minor improvements (2-5 kW). ECU remapping is uncommon and offers limited gains. It's best suited as a reliable, economical engine.
Fuel economy is respectable for its time. Expect around 7.5–8.5 L/100km (33–38 mpg UK) in combined driving for a Clio II. The lighter Twingo I might achieve slightly better figures, around 7.0–8.0 L/100km (35–40 mpg UK), depending on driving style and condition.
No. The Renault E7J 634 is a non-interference engine. If the timing chain were to fail or jump, the pistons will not contact the valves. This design significantly reduces the potential for catastrophic internal engine damage in the event of a timing system failure.
Renault recommends oil meeting the RN0700 specification, typically a 10W-40 mineral or semi-synthetic. ACEA A3/B3 specification oils are also suitable. Regular oil changes every 10,000–15,000 km (or annually) are crucial for engine longevity.
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