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I can upload all stats but car is in limp changed 02 sensors changed spark plugs sheesh 400$ running bimmer code/ link car starts up soon comes limp mode instantly let start off saying car ran good month ago ) check codes misfire 3 fuel injector voltage coming up 0 ? Did my fuel injector just break ??? Or you think wiring ecu/ dme any advice where to start also new pcv top pieces not breather hose 2 weeks later whining hissing suction when I take the oil cap off new pcv so I ordered them lower hoses to it if that will even make difference , did vacumn test to on back air pump 20psi while idle??? Please if any advice on any of these things I greatly appreciate it
 

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2013 750i and 2015 740i
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check codes misfire 3 fuel injector voltage coming up 0 ? Did my fuel injector just break ???
If you had multiple misfires, the DME will disable fuel injection and that could be why you don't have any voltage. If you clear the misfire code and it immediately comes back, you could have a leaking injector.

You can start by swapping the injector between cylinders and see if the fault follows.
 
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