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Discussion Starter #1
Good evening everyone, I have a 2016 435D with 35,000 on the clock fully serviced by BMW with a major service last done in October last year.

Last Friday it started juddering and having called out the RAC they said it was either an EGR issue (recall done last October) or possibly piston related. It subsequently had to be recovered to a BMW dealership who are saying that they have diagnosed an issue with two fuel injectors and they will know tomorrow if it has affected the pistons which if it has may mean it needs a new engine!

Obviously considering the service regime and the low mileage I can’t understand how this could have happened particularly when there have been no warning lights even after the issue arose and wondered if anyone else had something similar happen.

Having spoken to a BMW specialist they have said that if the worst case becomes a reality and considering the service history and low mileage then BMW should as a gesture of goodwill repair/replace free of charge. However if they won’t BMW will only offer a new engine which could be around £8000!

Cheers

ian
 

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Discussion Starter #2
Good evening everyone, I have a 2016 435D with 35,000 on the clock fully serviced by BMW with a major service last done in October last year.

Last Friday it started juddering and having called out the RAC they said it was either an EGR issue (recall done last October) or possibly piston related. It subsequently had to be recovered to a BMW dealership who are saying that they have diagnosed an issue with two fuel injectors and they will know tomorrow if it has affected the pistons which if it has may mean it needs a new engine!

Obviously considering the service regime and the low mileage I can’t understand how this could have happened particularly when there have been no warning lights even after the issue arose and wondered if anyone else had something similar happen.

Having spoken to a BMW specialist they have said that if the worst case becomes a reality and considering the service history and low mileage then BMW should as a gesture of goodwill repair/replace free of charge. However if they won’t BMW will only offer a new engine which could be around £8000!

Cheers

ian
I also had the EGR recall done in October when it was in for the service
 

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Ditto and not put much mileage on it since EGR replacement with WFH.

OP how are you getting on, any update from BMW or Stealership?
 

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Discussion Starter #7
It transpired it was a fuel injector that is goosed but no rationale explanation from BMW particularly considering mileage etc. Rest look ok apparently but now worried as to whether any of the others are going to go soon!
 

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It transpired it was a fuel injector that is goosed but no rationale explanation from BMW particularly considering mileage etc. Rest look ok apparently but now worried as to whether any of the others are going to go soon!
Lots of short journeys can cause deposits to build up on them. I had one car where they all went one after another and as it was under warranty they wouldn't just replace all 4.
Which diesel do you put in it? I always use premium diesel.
 

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its called waxing,and aint got nothing to do with better fuel,,ive only ever used asda ful,,never ever had a running problem,,go figure eh
 

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I use tesco or morrisons but i also put some 2-EHN Ethylhexyl Nitrate cetane improver in and it does help with the MPG as well.
Millers Echomax is another but a more expensive way to buy the same thing.
Buy the 5Ltr can and a bottle.
 

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Discussion Starter #12
So today another issue occurred that being that one of the turbos has gone! Spoke to BMW dealership and they saying separate problem not linked to the injector issue.

However spoke to a BMW specialist independent who have said that the turbo has gone because when the injector went this allowed diesel to mix with the oil which is now overfilled and watery and this has meant the turbo bearings have failed. They have also said that the dealership should have replaced the oil when replacing the injector as the contamination/ingress of diesel is common.

Awaiting BMW Manager to call back as they have initially said two different problems and it is not normal practice to change oil or check it with a injector swap!

Will update further when I know more.
 
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