What is the problem with the N47D20C injectors?
Injector problems: some n47d20c engines have experienced injector-related issues, such as fuel leakage, failure to start, or rough running. Faulty injectors may need to be replaced to restore proper fuel delivery and engine performance. One major issue is the timing chain failure, which can lead to catastrophic engine damage. This problem is exacerbated by insufficient oil changes and maintenance. Additionally, fuel system issues and turbocharger failures can also contribute to the overall performance decline of the n47d20c engine.Here are some of the most common problems associated with the N47D20C engine: Timing Chain Failure: The N47D20C engine has been plagued by timing chain issues. Premature wear and stretching of the timing chain can occur, leading to engine misfires, rattling noises, and even engine failure.Injector Problems: Some N47D20C engines have experienced injector-related issues, such as fuel leakage, failure to start, or rough running. Faulty injectors may need to be replaced to restore proper fuel delivery and engine performance.N47 Reliability: Timing Chain Failures: The most significant issue with the N47 is the timing chain. Many owners have reported premature timing chain failures, which can lead to catastrophic engine damage if not addressed in time. This issue is especially common in engines with higher mileage (over 100,000 miles).
What years were N47 timing chains affected?
The issue is particularly common in BMW models with N47 and N57 diesel engines, typically found in: BMW 1 Series (E81, E82, E87, E88) – 2007-2013. BMW 3 Series (E90, E91, E92, E93) – 2007-2013. BMW 5 Series (F10, F11) – 2010-2016. The BMW N47 engine is a 2. It produces between 143 to 204 horsepower and offers a torque range of 290 to 400 Nm.The N47 had the timing chain placed at the rear of the engine as BMW felt that access to it would not be needed for the life of the vehicle. BMW usually consider lifetime to mean 100,000 miles. Replacement of the timing chain on the 1 series, 3 series and 5 series engines normally require removal of the engine.People will say that the N47 is the worst BMW engine ever due to the timing chain issue. The timing gear on these engines are known to fail, to the point that BMW issued a recall for the timing chain gear a little while.The BMW N47s engine is an upgraded version of the well-known N47 diesel engine, fitted in popular BMW models like the 320d, 520d, and X1. While offering excellent performance and fuel efficiency, it suffers from similar reliability issues as the standard N47 — particularly the infamous timing chain problem.For UK drivers looking for long-term reliability, the M57 engine often comes out on top. However, the N57 offers modern efficiency improvements if you prefer newer BMW models.
What is the lifetime of the timing chain on a BMW N47?
There is no service schedule for replacing the timing chain, it’s ‘Lifetime’ however is on average around 100,000 miles but that will be heavily dependant on how the car has been maintained from new, we have seen instances of snapped timing chains from 50,000 miles so it is something we strongly recommend you plan to . Most modern timing chains are designed to last the life of the engine. In many cases, they can go over 150,000 to 200,000 miles without issue, especially if the engine has been properly maintained.For BMW and MINI owners, we recommend replacing timing chains proactively after 90,000 miles or 9 years to avoid catastrophic engine failures and costly repairs.Modern engines can last 300,000 miles or more with proper maintenance, and the timing chain can go that long, too.