N53 engine on 115k but had new injectors 45k

[S8QUATTRO]

Would a serviced n53 that’s had replacement injectors around 40k be due another set after 115k miles? Lots of bad press on this engine

[bmwmike]

Not out of the question at least some of them are worn out.

Due to the statified duty cycle, they fire 2-3 times per compression stroke IIRC, so they work 2-3 times as hard, plus they're made of cheese.

I think if you run the ISTA diagnostic it can test the injectors, but I always avoided that as I presumed it would flag them as out of tolerance.

If you've a misfire it can often be a neighbouring cylinder thats faulty as the output is checked per bank, so leaking injector 1 might show up as misfire on 2 & 3 as it tries to lean off the bank enough to get the mixture down, or something.

Been a while since i had one. I remember the anxiety of a cold morning start .

[S8QUATTRO]

I think I might swerve this car however nice it looks, last thing I need is mechanical problems

[bmwmike]

Probably best

[preacherman]

Yeah, what Mike said! 60-70k miles could well start seeing problems with leaking/filters breaking down. Will be interesting to see the life of them since the recent (alleged) changes to production. I have everything crossed after replacing 6!