Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › P0172 Intermittant Volvo 850T5 › Reply To: P0172 Intermittant Volvo 850T5 September 25, 2020 at 8:41 pm #963878 Richard KirshyParticipant That still doesn’t disprove a faulty injector spraying excessive fuel. That test is a bit different: https://www.youtube.com/results?search_query=fuel+injector+flow+testing