[Flatrabbit777]

Ill try to get straight to the point. please excuse my southern slang.
This was always my moms dream car and she could finally afford it over a decade later. She doesnt need the car back working in a hurry but damn sure aint got the money for the shop.
she bought the car and a week later multiple misfires. I aint a BMW mechanic but I have turned some wrenches before. I started with the obvious the battery seeing how BMW go buckwild with out a good battery. Battery is registers same ah and all that. Changed all the plugs and coil packs and fixed a vacuum leak. it idles and will rev up and not throw a code but if you drive it and give it some gas it starts rattling like a bag of cans.
multiple misfires on 5,6,8 read the codes with ista. I'm thinking 3 injectors wouldnt have went bad at the same time so Im thinking I got a vacuum leak on that side or the fuel pump on that side is screwed. if anyone can tell me if im on the right track or any suggestions Id appreciat it.
Thanks yall

[550bye]

Flatrabbit777 you would have to post some faults because it could be a handful or two of things. I have had those exact symptoms from 1) intake being loose, 2) faulty injectors, 3) CCV broke. So it could still be a long list of things. I personally just wouldn’t troubleshoot based on symptoms is what I’m getting at.

Three injectors could definitely have gone bad at the same time, I had 3 go bad at once on the same bank. Dealership told me it was the HPFP but it’s still running strong 4 years later, the injectors I was forced to replace. Good luck