BMW N43 injectors replacement and coding

Replacing and coding injectors on BMW 116i N43 engine.
Content:
00:00 Intro
02:20 Removing injectors
09:14 Mechanical test to identify leaking injectors
10:57 Preparing and replacing injectors
16:43 Coding injectors

[@allmech_BMW_fault_finding]

Never seen em pulled out like that. Clever.

[@byPana]

felicitari pentru tutorial !

[@EMSGARAGEE61]

Good Job🎉😊

[@CosminRotaru]

Thank you! 🙂

[@MartiansChronicle]

How is your engine running now? You get a lot more detail of what's happening with INPA. Is your NOx system working ok? Do you know if your car goes into Stratified Charge Mode? This mode is essential if you want the injectors to adapt properly.

[@CosminRotaru]

Hi! Yes, the engine runs normal now (with no misfires). It does goes in stratified mode. I can also see that it goes into desulfuration on the highway - which it wouldn't do if all stars are not aligned. :) I still have negative long fuel trims (especially at idle) which I am trying to figure out why (I am thinking temperature sensors, PCV, Vanos). Fuel pressure (high side) still drops when stoping the engine - but I was told I got it wrong, and this is normal for this engine... And I have an error on the water pump (miscommunication or something like that). You cannot get bored with this car :D

[@MartiansChronicle]

@CosminRotaru Good to hear the misfires have gone. Do you have 0 misfires or do you still get the occasional one? You might be interested in this (from Bimmerprofs): 1. "Remark: In my blog, I have previously mentioned my observations that MSD80/81 (BMW E series) stops updating the individual adaptations of the injectors in idle/Stratified charge if the AC is turned off. I have no information regarding problems/switching off regarding other adaptations (but there is a significant possibility that previously mentioned injector adaptations are not the only ones that are turned off)." 2. "Note: keep the AC always on! Only/if AC is on DME can determine the engine’s mechanical load (alternator and AC pump). Only if AC is on, DME upgrade injectors adaptations in idle/Stratified charge." I don't know if you have INPA but if you go to the above site, you provide the required data from INPA, and these guys will analyse your engine. Nobody knows these engines better than them. It's better you spend 50 Euros on analysis than change parts. :)

[@CosminRotaru]

@@MartiansChronicle i still get some occasional misfires . The AC-on suggestion i did not know (although i spent a lot of time on bimmerprofs. That is crazy! I shall try it 😁 Thank you!

[@paulmacheso9953]

@@CosminRotaru you get misfires after changing all 4 injectors ?

[@CosminRotaru]

@@paulmacheso9953 not a misfire error code, but if i look at live that i can see some every once in a while, at start basically. I'm not worrying about those.

[@zdravkobelinski4627]

one original injector index 11 is 450£ 🙈 i have bmw with 320i same engine and already has issues on 56k miles 😢

[@ngwoodworking7691]

Hello, could rings be compresed with hose clamps? Thanks..

[@CosminRotaru]

That seems a bit excessive... I've seen people using pen caps. And there's a special tool set from bmw...

[@ngwoodworking7691]

@@CosminRotaru Okay thanks would use pen caps.

[@rafaelsouzapedrosa]

do i need to code the injectors after i clean them ? if i disconnect the battery before i clean it ?

[@CosminRotaru]

The numbers on the injectors represent measured flow that the ecu needs to adjust fuel. You do not need to re-code as long as you put them back in the same place.

[@246alfa]

@@CosminRotaru These are two correction factors that have already escaped.