Engines to avoid from the BMW group

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# BMW N45 engine

Types: BMW 116i, BMW 316i (E90), BMW 320si
Engine codes: N45B16, N45NB16, N45B20S
Manufacturing: 2004 - 2011 (N45B20S only 2006-)
Reason: At N45, besides the high consumption and low power (116i), there is the irregular gait, running in 3 cylinders, abnormal vibrations due to the distribution chain. In the N45 engines Valvotronic was dropped, that would not be a problem, but the extension of the distribution chain and the orientation of the guide and tension pads cause problems. The manufacturer used a sheet to improve the range but they did not solve the problem definitively. On the 320s engine and because of the small distance between the cylinders they crack.
 

 

# BMW N47 engine

Types: BMW 118d / 120d / 123d, BMW 318d / 320d, BMW 520d, BMW X1 18d / 20d / 23d, BMW X3 18d / 20d
Engine Code: N47D20
Manufacturing: 2007 - 2011
Reason: Aluminum turbodiesel engines of the N47 models, besides the power / consumption ratio, over time appear problems in the area of the distribution chain. In general, the problem can be noticed by a clanking noise in the engine area and the ignition of the engine failure warning light, in many cases the engine death is caused by the chain breaking. And in this case the problem arises due to the chain's length in time. The repair costs enormously because of the sprocket of the motor shaft which is common body with the sprocket, and the shaft costs some money. Less well known is the fact that even with the engine block cracking, the symptoms are decreased cooling fluid and white smoke.
 

 

#Motor BMW N63 4.4 Bitmap

Types: BMW 750i / Li, BMW X5 / X6 50i, BMW X6 ActiveHybrid, BMW 550i (and Gran Turismo), BMW 650i (coupe, convertible)
Engine Code: N63B44
Manufactured: 2008 - 2012
Reason: The most problematic BMW engine of recent years. The biggest problem is the engine cooling. The mistake is the positioning between the two banks of the engine of the turbocharger turbines delimited only by a sheet. It is almost impossible to cool the engine, boiling points appear where it can boil the engine oil. All of this will lead to the failure of the cooling system.
Deposits appear on the rotors of the turbines, these roasting the heads. Further, the variable control of the valves is destroyed, it also includes the cam axles and the valve guides. The cherry on the cake is the elongation of the distribution chain and the dripping of the injectors. Drip injectors can cause
 

 

# BMW / PSA 1.6 ¨Prince¨

Types: SA (1.6 VTi or THP): Peugeot 207, Peugeot 308, Peugeot 3008, Peugeot 5008, Peugeot Partner, Citroën C3 (and Picasso), Citroën C4 (and Picasso), Citroën C5, Citroën Berlingo. BMW: Mini Cooper, Mini Cooper S
Engine codes: EP6 .., EP6C .., N14B16A, N12B16
Manufacturing: 2006 - 2010
Reason: Perhaps the best engine as dynamics and consumption until problems arise. Because of the well-known at BMW regarding the extension of the distribution chain, the distribution can be overlooked. Overloaded engines can form calamine deposits in the engine. These can cause various symptoms such as irregular gait or self-ignition in the cylinders. The newer the car, the more these problems are remedied or developed by the manufacturer. It is interesting that in the 1.4 Vti engines not equipped with turbo these problems do not occur. But also in this case when clamping the chain d