Commercial vehicles often come to our service center, namely GAZelle cars, and today is no exception. An onboard workhorse with a ZMZ 405.22 Euro-2 engine pulled into the diagnostic post. The owner of the car (or rather the third owner) after purchasing it noticed that the car was driving somehow wrong. The revolutions dance as they please: they rise and fall. The check light blinks like crazy, the car jerks and shakes. In general, the car lives its own life, and something needs to be done about it
