The Peugeot K1D (TU3A) is a 1,360 cc, inline‑four, naturally aspirated petrol engine produced between 1986 and 1992. It features a cast‑iron block, aluminum head, and a single overhead camshaft driven by a timing belt. Peak output is 55 kW (75 PS) and 106 Nm of torque, providing adequate performance for compact hatchbacks of its era.
Fitted primarily to the Peugeot 205 and 309, the K1D was engineered for economical, reliable urban and suburban motoring. Emissions compliance was achieved through basic carburetion and ignition timing, meeting pre-catalyst standards common before formal Euro regulations.
One documented concern is premature wear of the timing belt tensioner pulley bearing, noted in Peugeot Technical Bulletin 8615. This is often caused by inadequate lubrication or ingress of road grit, leading to belt misalignment or failure. Later TU3 variants transitioned to improved tensioner designs for enhanced durability.
Production years 1986–1992 pre-date formal Euro emissions standards (VCA UK Type Approval not applicable for pre-1992 vehicles).
The Peugeot K1D (TU3A) is a 1,360 cc inline‑four petrol engine engineered for superminis (1986-1992). It combines a simple SOHC valvetrain with a single-barrel carburetor to deliver dependable, low-cost performance. Designed for pre-catalyst emissions norms, it prioritizes mechanical simplicity and ease of repair over peak efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,360 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 75.0 mm × 77.0 mm | |
| Power output | 55 kW (75 PS) @ 5,800 rpm | |
| Torque | 106 Nm @ 3,400 rpm | |
| Fuel system | Single-barrel carburetor (Solex) | |
| Emissions standard | Pre-Euro (Basic) | |
| Compression ratio | 9.3:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt‑driven | |
| Oil type | API SF (SAE 10W‑40) | |
| Dry weight | 105 kg |
The SOHC design offers a good balance of performance and economy for city driving. The timing belt must be replaced every 60,000 km or 4 years to prevent catastrophic interference engine damage. The simple carburetor requires periodic cleaning and adjustment; using ethanol-free petrol is recommended. The 9.3:1 compression ratio is tolerant of lower-octane fuels. The tensioner pulley bearing is a known wear item; inspect it during every belt change per Peugeot Technical Bulletin 8615. Oil changes with 10W-40 mineral oil every 10,000 km are critical for longevity.
Oil Specs: Requires API SF specification oil (Peugeot Service Manual 8615). Modern equivalents meeting API SL or higher are acceptable.
Emissions: Pre-dates formal Euro standards. Compliance was based on national regulations of the era (VCA Historical Vehicle Guidance).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across model range (Peugeot Group PT-1988).
Peugeot Technical Information System: Docs 8615, EPC 1360A
UK Vehicle Certification Agency Historical Vehicle Guidance
EEC Directive 80/1269 Power Measurement Standards
The Peugeot K1D (TU3A) was used across Peugeot's 205/309 platforms with transverse mounting. This engine received platform-specific adaptations-minor carburetor jetting and exhaust manifold routing-and no significant facelift revisions during its production run, ensuring broad interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the front face of the cylinder block, near the timing belt cover (Peugeot Service Manual 8615). The full designation "TU3A" or "K1D" will be visible. Visually, it is identifiable by its black plastic rocker cover and the single-barrel Solex carburetor mounted on the intake manifold. Critical differentiation from the larger XU5: The K1D has a smaller displacement (1.4L vs 1.6L) and a visibly smaller carburetor. The distributor is mounted at the rear of the cylinder head.
The K1D's primary reliability risk is timing belt failure due to age or tensioner wear, with near-total incidence of severe engine damage if it breaks. Peugeot service data indicates the belt and tensioner are common wear items by 80,000 km, while owner club records show carburetor and ignition faults as frequent causes of drivability complaints. Infrequent oil changes accelerate bearing wear, making adherence to the maintenance schedule critical.
Analysis derived from Peugeot technical bulletins (1986-1992) and owner club maintenance records. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT K1D-TU3S.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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