The BMW N46 is a naturally aspirated inline-four piston engines which replaced the BMW N42 and was produced from 2004 to 2015. [1] The N46 serves as the basis for the smaller BMW N45 engine (which does not have Valvetronic). In 2007, the N46's successor - the BMW N43 - …

Dec 3, 2023 · Here are the most common BMW N46 engine problems: Timing chain and tensioner failures; Various and serious oil leaks; Cam and crankshaft sensor failure; VANOS solenoid problems; Valvetronic and VVT motor failures; To find out more about these problems, I contacted 3 past owners of BMW E90s with this engine and I did thorough research online.

Jan 12, 2025 · Explore common BMW N46 engine problems, their symptoms, and solutions to ensure your vehicle's reliability and performance.

Apr 12, 2015 · BMW N46 engine modifications and differences. 1. N46B20O0 (2004 – 2007) is base modification of engine with 143 HP at 6,000 rpm and 200 Nm at 3,750 rpm. 2. N46B20U2 (2004 – 2007) is lighter version with another non-DISA intake manifold and another exhaust camshaft. Engine produces 136 HP at 5,750 rpm and 180 Nm at 3,250 rpm. 3.

Jan 12, 2025 · Explore common BMW N46B20 engine problems, their symptoms, and potential consequences for informed vehicle maintenance.

The BMW N46 is a four-cylinder gasoline engine introduced in 2003, succeeding the N42 model. The engine first debuted in the 3 Series E46 and was later used in the 1 Series E87 and 3 Series E90. Unlike the closely related N45, the N46 was equipped with the Valvetronic system.

The BMW N46 is a straight-4 DOHC piston engine which replaced the N42 and was produced from 2004 to 2015. Compared with its N42 predecessor, the N46 features a revised crankshaft, intake manifold and valvetrain. In 2007, the N46 was updated, which was known as the N46N.

Mar 25, 2025 · Discover common problems with the BMW N46 engine and effective solutions to maintain performance and reliability.

Dec 29, 2024 · BMW N46NB20 (2007 – 2012) – analog of the 150 hp version, with a different cylinder-head cover, modified exhaust system, new engine management system Bosch MV17.4.6. Power output 170 hp at 6400 rpm, torque 210 Nm at 4100 rpm.

BMW N46 gasoline engines were produced from 2004 to 2015 and were installed on almost all compact and medium-sized models of the group of that time. The 2.0-liter N46B20 engine was created on the basis of the N42B20 and at first glance …