Hello, I have a 2007 d12 and it’s having starting issues, acts like it loses fuel prime and turns over excessively and then a few cylinders hit and then all eventually come on line. Had injectors tested and they are ok. Then occasionally it starts perfect after only a couple revolutions. Occasionally it will turn over and never hit then you stop and try again in a few seconds and it starts perfect. Volvo dealer just takes huge sums of money and cures nothing. Any ideas would be appreciated.