Quote:
Originally Posted by niets123
Harsh in the sound and tendencies to knock. I think there will be a lot of soot in the engine and on the valves.
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Have you tried any cleaning products such as Injector cleaners or, if you can get it, Cataclean?
Also how old is your MAF sensor and O2 sensors?
Does the engine oil smell strongly of petrol?
When was the car serviced including new plugs?
When i bought my 2014 116i in March, the tailpipe was very, very sooty - like a 20year old diesel's and fuel consumption was poor.
I replaced the MAF and O2 sensor and now have a clean tailpipe, and much lower consumption, with no running problems at all.