The BMW N43 is a naturally aspirated four-cylinder petrol engine which was sold from 2006 to 2013. It replaced both the BMW N46 and BMW N45 engines. [1] However the N43 was not sold in countries with high sulfur fuel, [2] therefore the N45/N46 engines remained in production alongside the N43.

Jan 10, 2025 · The N43 engine exemplifies BMW’s commitment to blending performance with practicality, making it a compelling choice for a variety of driving scenarios. With its robust specifications and efficient design, the N43 continues to …

Oct 14, 2023 · Common problems with the BMW N43 engine include coil failures, carbon buildup, injector failure, HPFP failure, water pump failure, thermostat failure, timing chain stretching, timing chain guide failure that causes oil starvation, VANOS problems, and NOx sensor failure.

Jul 17, 2021 · BMW’s N43 was an unreliable engine that exhibited many problems, like worn coil packs, oil pumps, injectors, etc. The problem would worsen with issues like difficulty in starting the car, low gas mileage, and sometimes, the dreaded timing chain breakages. So, all the BMW N43 engine problems are below: BMW N43 Engine: Low Oil Pressure Problem

Sep 15, 2017 · N43's run very, very hot for emissions. You'll often find that cars with oil lights that flicker at idle after a run have a faulty thermostat and are running so hot the oil is too thin. Cheap fix. Low oil pressure can also be due to the balance shaft bearings being worn out - the 1.6 N43 (rare) doesn't have them but the 2.0 one does.

3 days ago · The BMW N43B20 is a 2.0 liters (1,995 cc, 121.7 cu·in) straight-four, four-stroke cycle natural aspirated gasoline engine from the BMW N43-family. The engine was manufactured from 2007 to 2011 on the BMW Plant Hams Hall (Coleshill, Birmingham, United Kingdom).

Apr 11, 2015 · It was used in BMW 20i models and produced 170 HP at 6,700 rpm and 210 Nm at 4,250 rpm. At the same time N43B16 with lower powerful characteristics was produced on base of the engine. N42 – N45B20S and N46B20 4-cylinder successors were constructed along with N43.

The BMW N43 is a straight-4 naturally aspirated gasoline engine DOHC engine which was sold from 2007-2011. It replaced the N46 (and related N45), however the N43 was not sold in countries with high sulfur fuel, therefore the N45/N46 engines remained in …

May 7, 2020 · Recently we have started to see engine problems / engine failures with BMW petrol engines – engine code N43. Failure can happen without prior warning and cause the engine to seize up, many repairs for this can run into the thousands with replacement engines needed.

BMW N43 Engine Problems. With the removal of the Valvetronic, one weak point was eliminated; however, several new issues have arisen due to the shift to direct gasoline injection. Oil loss and elongated timing chains are still significant concerns. Below we address the common weak points of the N43. Stretched Timing Chain