wondering if anyone out there can help or offer some advice on a problem that's driving me up the wall! The car is an A6 Allroad on a 05 plate - its a limited edition 2.5L TDI with around 73k miles on it. Up to recently it's always been serviced by Audi and never ever given any problems at all. Owned from new and used on local trips as well as longer trips into France. Always been a case of not thinking about it - you just get in it and go.
If there was any issue at all, it was that occasionally the car wouldn't start on the button and took a couple of turnovers before starting, but nothing to cause any concern.
At the NEC in November last year, the car was parked up but on the Saturday night when leaving to go back to the hotel the car failed to start. The engine turned over very quickly and when it finally started, there were clouds of smoke and the engine was running extremely roughly and most of the warning lights on the dash came on.
The car was recovered to the local Audi dealer (Newbury) who started to look at it. I had thought injector pump and audi quoted 2,700 to fit, plus they advised a cambelt change at the same time at a further 600 quid! The car was then taken to our local garage, who confirmed they would look to repair the pump if possible and not just replace. All work was completed by them with a reconditioned pump directly from Bosch including cambelt change for just over 2k.
The car starts from cold on the button everytime, irrespective of how cold it is outside. It runs fine once started. The problem is that oncethe car has been run and then you try and restart it when it's warm. The glowplug light stays on for about a second and goes out. Starting then takes a long time and will only start with foot flat on the floor. Again, once started it runs fine.
There are no fault codes, but it seems to me that there is a setting for warmup time of the glowplugs on anything other than cold is set too short, unless there's some other problem. The garage is out of ideas and don't seem to be able to get any sense out of Audi - and in the meantime I'm pulling my hair out!!
Any advice gratefully received.