Temporary loss of power

My BMW 116i has a temporary loss of power when accelerating in first and second gear (between around 1500rpm and 2000rpm). It feels as though the turbo is not working (it normally has very linear acceleration). This only happens when the engine is first started from cold and the problem is gone within 1 minute of driving. When the power does come back, the turbo kicks in quite violently making for very uneven acceleration. Any thoughts what might be the issue? I always run the car on Shell V Power Nitro+ and have covered 32000 miles.

Asked on 28 November 2015 by AM

Answered by Honest John
I'd guess that engine oil is not getting to the turbo bearings and that the 'banjo' oil feed and oil return pipes to/from the turbo bearings need to be replaced because they are choked with carbon.
Similar questions
I own a BMW 118i 1.4 auto. Issue is, there is a noticeable change in engine noise and slight vibration in steering wheel between 1800 and 2000rpm. Even more so when under load, feels like it's in the wrong...
I have a 2016 Peugeot Boxer 2.0 HDi and get black smoke under acceleration plus the engine light comes on?
My Volkswagen 1.6 TDI engine was running perfectly but one morning when I started the engine, it chugged and now holds the revs. It revs up and down with lots of black smoke. What's wrong?
Related models
A very entertaining car to drive, efficient yet powerful engines, superb infotainment.
 

Value my car

Save £75 on Warranty using code HJ75

with MotorEasy

Get a warranty quote

Save 12% on GAP Insurance

Use HJ21 to save on an ALA policy

See offer