Damo66

Just an update guys, well i changed the fuel regulator on the end of the common rail and had no joy so I changed the fuel pressure sensor in the rail and still no joy then finally I have changed the fuel pressure regulator on the side of the high pressure fuel pump and bingo we are back in business although interestingly having called Audi dealers and Tps they both said there is no regulator on the side of the pump so I have ended getting it from Bosch direct. I have a small problem now in that the regulator weeps so I'm hoping new orings will solve that, fingers crossed I'm back in the game again .

Hello guys I'm hoping there's a Joda on here that can help. Ive had my a4 avant 5 yrs now and it's never nmissed a beat until 6 months ago. It is a 3ltr Tdi v6 automatic. I was driving along then stopped in stationary traffic and at tickover just cut out dead, turned her over and it eventually started with a couple of pumps of pedal but I had never had to do that previously on start up. The second time this occurred I was parked facing down a hill and it would not start. So left the car and sent a recovery friend to get it at which point it started straight away. In to the garage it went and they could not find anything wrong with it and the historic codes they said were relating to injectors so I'm thinking injector replacement or Fuel backfeed somehow. They said run it till problem is constantly there. So 5 days of running it no problems it cuts out instantly whilst crawling in slow traffic again and again it will not startso we recovered it to my garage who said it's electrical it must be a relay so my electrician checked it all and said it was not electrical and it was fuel related and proved it by starting the car with easy start at which point it fired up virtually straight away. So the garage did injector leak off tests and all injectors were delivering equal amounts of fuel so the injectors have been ruled out as ok ? So then they found a fuel pressure sensor on the end of the common rail was not holding pressure so they changed it ( £300 ouch) I took it away drove it for 1/2 day and boom it cuts out again with exactly Same problem but on a busy roundabout causing mayhem luckily there was a garage very close by so I borrowed some brake cleaner and used it as easy start and she fired up straight away at which point I drove it back to the garage where it still is after a month!! And no further forward ! Any help would be greatly appreciated