ok,, i had this problem as some of you remembered:
I went to 2 specialized bmw repair service shops and dealerships again and I didn't get anything. the consumption is ok, I don't have any engine lights on bc , the spark plugs are good. the symptoms: 2 days after I received the car with the new injectors. i start the car cold in the morning...
bobistheoilguy.com
so after some search and tests for 2 weeks the technicians at the dealership say that they will replace again the injectors for free, 2cond time since January probably due to a faulty one ,problematic from new. i know that here were some pieces that were problematic from factory made. they had to produce many pieces since the pandemic closed the factories around world but BMW'S DI injectors were going bad more and more,day by day , month by month fro many owners around the world. so due to increased production ,maybe quality control wasn't always good enough.
now, along with replacing injectors they will replace oils and filter with new,sthing they did't last time in Jan. they think that a lot of fuel dilution is there, something common to bmw's DI engines combined with short trip commute drivers like me.they think this will eliminate the problem for now.
i always did short trips.why fuel dilution so heavy now.i have replaced bad injectors once again before 60.000 km. a friend of mine who wasn't short tripper he did too. i know that its that its a problematic part ,these models engine injectors and not just the way we drive. i am sure of that. but here is my question:
did fuel dilution contributed to bad failing injectors or the other way around? what is the connection with each other?
my spark plugs have 20.000 km running.should i replaced them too? i heard that opinion too,because of bad fuel from bad injectors. and yes i smelled fuel many times.
i have that car for 140.000 km and its the first time i am facing the thing with fuel dilution.car was running motul x-clean+ 5-30 for 11.000 km until now. i filled an extra 1,5 lt during that time .
would an oil with higher grade like 5-40 be better for fuel dilution as i heard many members claim here on bitog?
maybe an ECT causes all these things? should i mention that to the techs?
Which one is likely to be easier on the cats? M1 SN M1 SP PPE I am running PPE and noticed a lot of soot coming out of the tailpipe after 5K
bobistheoilguy.com
engine coolant temperature sensor (ECT) issue can flood the engine with gasoline and thinn out engine oil, also will mess with O2 sensor