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Timing chain failure may call for engine replacement or a costly repair. The most seriously affected units which require the most extensive repairs were produced from 01.03.2007 to 05.01.2009. [4] However, there have been reports of timing chain failure in BMW diesel engines manufactured until 2015.
The BMW M57 is a straight-6 diesel engine produced ... Every cylinder has two inlet and two exhaust valves as well as two chain ... history and common problems ...
The original M47 diesel engine featured non-common-rail direct fuel injection and a 2.0 L; 119.1 cu in (1,951 cc) block. First seen in 1998, the M47D20 produced 100 kW (134 hp) and 280 N⋅m (207 lb⋅ft) in its original 320d/520d guise, and 85 kW (114 hp) with 265 N⋅m (195 lb⋅ft) in the 318d variant.
The BMW N57 is a family of aluminium, turbocharged straight-6 common rail diesel engines. The engines utilize variable geometry turbochargers and Bosch piezo-electric injectors. [1] The engine jointly replaced the M57 straight-6 and M67 V8 engines. In 2015 the N57 started to be replaced with the B57 engine, beginning with the G11 730d.
The Prince engine is a family of inline-four 16-valve all-aluminium petrol engines with variable valve lift and variable valve timing developed by PSA Peugeot Citroën and BMW. It replaced a part of the TU line (the other part was later replaced by the EB engine) and both the ES and EW lines. Engines: EP3 — 1.4 L (1,397 cc) Euro 4 70-72 kW
The article does say that a used car bought in 2011 with 100,000 miles already on the clock had a timing chain problem. Later on the article describes the same car as being 5 years old; with the article being dated June 2013 that would mean the car was manufactured in 2008.
The B57 replaced the previous N57 diesel engine, and was first introduced in the G11 7 Series. The B57 is available in configurations of up to 4 turbochargers, that operate in a double-series layout. [4] In addition to BMW's own brand vehicles, the BMW B57 inline-6 engine is also used in a diesel variant of the Ineos Grenadier. [5]
Aside from the belt/chain itself, also common is a failure of the tensioner, and/or the various gear and idler bearings, causing the belt/chain to derail. Furthermore, in engines where the timing belt drives the water pump, failure of the water pump can cause the pump to seize, which can break the timing belt or chain.
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