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With the service history and the work that’s been done to it, 173000 is nothing to this car I’ve driven newer cars that have half the mileage and don’t drive as good as this. No problem as I said I’m sat on it and no rush to sell if the right offer comes up👍🏼, good luck with your search pal

Also thanks for the offer in general and hope your sell yours to someone

Definitely could be the sensor. This would be picked up on a diagnostic check to see if any fault codes flag up.

At a guess It could be an injection issue or issue with an injection pump. The later needs coding to the car if you source a replacement.

Assuming the sun roof was not hit by a stone or other missile, then there is no doubt that the dealer who sold you the car is liable for its repair. It may well be a manufacturing fault at Audi that led to its destruction, but it is the vendor who has liability. The dealer will undoubtedly prevaricate but don't give in to him. Demand either a replacement car or a full and guaranteed repair.

So what do you intend to do about it? In your position I would write a letter or email of complaint explaining the fault and demanding it be repaired. Do not use phone calls or text messages for that purpose. You need evidence that can be produced in court should it ever get to that stage.

Ah, so better atomisation is the key. That makes sense and is something I should have thought of for myself. Thanks for the explanation.

Hi Cliff, struggle no more, the fuel rail pressure at idle [warm] is about 650psi, [cold] its about 850psi this helps atomisation of the fuel when its fed into the injectors, when you consider the Venturi in the injectors is less than four microns, a human hair is six microns, fuel fed in under that pressure will almost instantly atomise and become highly combustible on compression, in effect you dont really need glow plugs they just add an element of warmth that makes the swirl vapour even more combustable, the problem really becomes a problem when you add a DPF to the build, most diesels equipped with these need to achieve a temperature of at least 600 degrees to regenerate especially when most Audi diesels are post injection which means the injection process happens later this is called retardation and the fuel droplets are cooler, this is where the plugs come in and super heat the colder fuel thus making it combust at the front of the DPF core and start burning the soot and unburnt fuel from the core itself, so in essence if they did not have such high pressure in the rail the whole process is chemically impossible. Steve.

Maybe gracious to thank Matt anyway Tomas - at least he took the trouble to respond to you.

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