For the first time Toyota 4A was released in 1982 and did not leave the assembly line until 2002. The first two characters in its name indicate that this is the fourth modification in the “A” series of engines produced by the company. The series began ten years earlier, when the company’s engineers set out to create a new engine for Toyota Tercel, which would provide more economical fuel consumption and better technical performance.
Specifications
| Manufacturer | Kamigo Plant Shimoyama Plant Deeside Engine Plant North Plant Tianjin FAW Toyota Engine’s Plant No. 1 |
| Also called | Toyota 4A |
| Production years | 1982-2002 |
| Cylinder block alloy | cast iron |
| Fuel system | carburetor/injector |
| Configuration | inline |
| Number of cylinders | 4 |
| Valves per cylinder | 4/2/5 |
| Piston stroke, mm | 77 |
| Cylinder bore, mm | 81 |
| Compression ratio | 8 8.9 9 9.3 9.4 9.5 10.3 10.5 11 |
| Displacement, cc | 1587 |
| Power output, hp | 78/5600 84/5600 90/4800 95/6000 100/5600 105/6000 110/6000 112/6600 115/5800 125/7200 128/7200 145/6400 160/7400 165/7600 170/6400 |
| Torque output, Nm / rpm | 117/2800 130/3600 130/3600 135/3600 136/3600 142/3200 142/4800 131/4800 145/4800 149/4800 149/4800 190/4400 162/5200 162/5600 206/4400 |
| Fuel type | 92-95 |
| Euro standards | — |
| Weight, kg | 154 |
| Fuel consumption, L/100 km (for Celica GT) — city — highway — combined |
10.5 7.9 9.0 |
| Oil consumption, gr/1000 km | up to 1000 |
| Recommended engine oil | 5W-30 / 10W-30 / 15W-40 / 20W-50 |
| Engine oil capacity, liter | 3.9 |
| Oil change interval, km | 10000 (better 5000) |
| Normal engine operating temperature, °C | — |
| Engine lifespan, km — official information — real |
300 300+ |
Frequent problems
- Excessive fuel consumption. The reason is the lambda probe. Replacement required. It is also necessary to diagnose the absolute pressure sensor if there are vibrations in idle, dark smoke and plaque on the candles.
- Burnout fuel plus vibration – need to clean injectors.
- Interruptions in turnover or freezing. Idle valve defective. You also need to clean the throttle valve and adjust its position sensor.
- No motor start and floating speed. The thermal sensor is out of order.
- Interruptions in speed. It is necessary to clean the throttle valve, KXX, injectors, crankcase valve and spark plugs.
- The engine often goes out. The reason is a gasoline pump, distributor or fuel filter.
- Oil burn. Replace rings and valve stem seals.
- Knocking on the motor. It is usually produced by piston pins. If the mileage is high, the valve clearances need to be adjusted.
On average, unit 4A (as well as 5A and 7A based on it) is designed for at least 300 thousand km of track. Lean Burn versions are not recommended for purchase, as they do not differ in good performance.
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