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.

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, …

Jan 10, 2025 · BMW 3 Series (E90/E92) – In the 3 Series, the N43 engine provided a solid balance of performance and everyday usability, making it a popular choice among enthusiasts and commuters alike. BMW 5 Series (E60) – The N43 was also featured in some variants of the 5 Series, contributing to the model’s reputation for luxury and performance.

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:

Oct 26, 2023 · It will report a misfire on cyl 3, when in fact it is a misfire in the previous cylinder in the firing order, in your case it will be number 1, as the firing order is 1-3-4-2. Try swapping cyl …

Apr 11, 2015 · BMW N43B20 engine reliability, problems and repair N43B20 is a new 2-liter version of N42B20 which was produced with several modifications. N43 was equipped with direct injection system. Variable valve lift system Valvetronic was finally removed.

Jul 25, 2023 · Delivering 170 bhp without a turbocharger in a 2-liter four-cylinder engine was quite an achievement. BMW designed this engine with one arm behind their back – facing ever …

N43B20O0 – 170 PS (125 KW; 168 HP) at 6,700 rpm of horsepower and 210 Nm (21.4 kg·m; 155.0 ft·lb) at 4,250 rpm of torque. This version was used on the BMW 120i (E81/E82/E87/E88), BMW 320i (E90/E91/E92/E93) and BMW 520i (E60/E61). The breakdown of the engine code is as follows: N43 – Engine Family B – Gasoline 20 – 2.0 Liter Displacement

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.

slackened and later removed. After the central bolt is released, the sprocket wheels of the timing chain and the oil pump will no longer be non-positively connected to the crankshaft (risk of damage). Balancing shafts rotate and must be readjusted as described later. RA Replacing timing chain (N43) BMW AG - TIS 21.01.2013 01:09