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Replcacing and coding injectors
I am having some issues with my N63 engine 550i. Recently, it has started misfiring slightly on cold start and will trip the "drivetrain error" warning. When I read the codes, it is a cyl 5 misfire - injection shut down.
I pulled the spark plugs (dealer was supposed to change ~10k miles ago) but they looked a little worn. What I think is cyl # 5 plug looked normal colour. Am I right in assuming the RHS while looking at the front of the engine is #5 and #1 is front LHS?
Interestingly, plug #1 looked more problematic. Was very black.
I have changed all the plugs but I don't think it solved the issue. It sounds like an injector issue to me. But is it #5 or #1?
If I change injectors, can I just change one? Or do I need to do them all? Do I really need to recode? If so, where can I buy the tool?
Thanks in advance
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