Hello, i have a little rough idle after first start and some bad movements from car between 1500-2000 rpm (not always), the injectors value are around 0.8 - 1.0 in ISTA-D at the start in the morning.


I want to use diesel injector cleaner. Is it okay or not? In my country, the BMW dealer told me not to use because i can do much more hurt to the injectors.