Do you have a BMW with an N43 engine under the hood? If so, then you might be facing some common issues from time to time. You may be on the lookout for causes, symptoms, and solutions to problems. After reading this article, your search will come to an end as you will be able to diagnose and solve the problems yourself. Read on to learn more.
1. Timing chain problem
A timing chain failure can result in the complete destruction of the engine. What happens is that the timing chain is responsible for making the entire engine system work. If it breaks down, it can cause considerable damage to the engine. So if you have timing chain problems, make sure you replace it right away.
Symptoms
rough idle
Strange noises
The engine fails
engine failure
metal shavings
check engine light
Solution
You may need to have an engine overhaul if your engine is severely damaged due to a broken timing chain. The cost of rebuilding an engine will be between $700 and $850. Therefore, keeping an eye on the distribution chain is vital if you want to be sure.
2.NOx sensor error
When the manufacturer released the N43 and N53 engines, it added more complex technology to these engines. One of those components is the NOx sensor. The function of this sensor is to monitor nitrogen oxide emissions from the engine to comply with regulations.
Symptoms of the BMW N43 NOx sensor error
Below is the list of some common symptoms of this sensor error:
High fuel consumption
rough idle
engine warning lights
The solution to the NOx sensor error
There are three possible solutions to these problems: sensor replacement or removal of long-term fittings
There are two possible and easy solutions for NOx sensor errors. These are the following:
3. Problems with the fuel injectors
In winter, most engine problems are caused by a drop in temperature. This common problem occurs due to problems with the fuel injectors. A faulty fuel injector can cause many other complications. Also, these problems can cause complete engine failure if not fixed in time.
Symptoms of a bad fuel injector
If you notice any of these signs, you should take action to prevent the problem from getting worse:
Startup stuttering sounds and hiccups
Car fumes
Bad smell
rough driving
idle problems
engine knocks
Solution for fuel injector problems.
If you have one or more of the symptoms mentioned above, we suggest that you replace the fuel injector. This will fix the problem and allow you to experience a smooth ride once again.
Apart from this, you will enjoy better fuel economy due to the proper functioning of the injectors. Once you’ve replaced the components, your car’s engine will start instantly and the smell will be gone.
Conclusion
Simply put, when it comes to build quality, the engine in a BMW N43 is exceptional. However, some issues need to be fixed from time to time. Therefore, if you have decided to buy this vehicle, we suggest that you prepare yourself to face these problems. After all, you don’t want to end up ruining your vehicle.
