A two-liter version of the M50 engine, produced since 1990, which took its place in 1990 with the 520i, and a year later with the 320i. The cylinder diameter is 80 mm and the piston stroke is 66 mm. As a result, the engineers managed to get a power equal to 150 hp.
Specifications
| Manufacturer | Munich Plant |
| Also called | M50 |
| Production years | 1990-1996 |
| Cylinder block alloy | cast iron |
| Fuel system | injector |
| Configuration | inline |
| Number of cylinders | 6 |
| Valves per cylinder | 4 |
| Piston stroke, mm | 66 |
| Cylinder bore, mm | 80 |
| Compression ratio | 10.5 11 (TU) |
| Displacement, cc | 1991 |
| Power output, hp | 150/6000 150/5900 (TU) |
| Torque output, Nm / rpm | 190/4700 190/4200 (TU) |
| Fuel type | 95 |
| Euro standards | Euro 1 |
| Weight, kg | — |
| Fuel consumption, L/100 km (for E36 320i) — city — highway — combined |
11.2 6.7 8.6 |
| Oil consumption, gr/1000 km | up to 1000 |
| Recommended engine oil | 5W-30 / 5W-40 / 10W-40 / 15W-40 |
| Engine oil capacity, liter | 5.75 |
| Oil change interval, km | 7000-10000 |
| Normal engine operating temperature, °C | ~90 |
| Engine lifespan, km — official information — real |
— 400+ |
Frequent problems
- Overtemperature. The M50 motor has a tendency to frequent overheating, and with serious consequences. First of all, you need to check the radiator, air plugs in the system and the cap, as well as the thermostat and pump.
- Troenie. It is necessary to diagnose ignition coils, injectors and spark plugs.
- Interruptions in speed. The reason is a breakdown of the idle valve. It needs to be cleaned. In addition, the problem may lie in the TPS throttle sensor, as well as the temperature sensor and the lambda probe.
- Vanos M50. In case of a breakdown, there is a rumble, a decrease in traction, interruptions in speed. As a repair measure, you will need to purchase a Vanos repair kit.
The unit is already old enough, and therefore its operation is accompanied by an increased oil consumption (about a liter per thousand km), from which even a major overhaul does not save. Other problems may include leaking sump gaskets, valve covers, oil dipsticks, as well as cracking of the antifreeze tank, failure of camshaft and crankshaft sensors, and coolant heating. Despite this, the motors of this series are capable of traveling more than 400 thousand km. Therefore, they are often bought for tuning and swap.
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