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Hi the O.E. injectors are Bosch but I am led to believe Delphi do them as well, there is nothing that you can change on them or clean unless you have specialist equipment, new injectors will need coding.

Hi the best people to go see for injectors are United Diesels, they are brilliant with advice and will give you options, as for doing it yourself if you have never tackled something like this before I would use a garage as the injectors go through a rubber seal on the rocker cover which will also need changing, the seals are cheap TPS but they will probably suggest you need new fuel feed pipes for the injectors which is rubbish as if you have someone who knows what they are about and wont over tighten them the old pipes will go again, from a personal point of view with that in mind your milage I would change all four as these are Piezo injectors and are very delicate and precise in operation, the old type of injectors had a detent ball and spring arrangement which when the engine was revved would bounce and overfuel hence black smoke, Piezo on the other hand are controlled by electrical current to make the Piezo slices expand and contract and never over lift the pintle this is supported by extra Venturi that are 0.6 which is finer than a human hair and these allow precise addition or decline of fuel up to five times in any given cylinder cycle therefore creating almost perfect fuelling, I have used Dipetane for a few years now, what a wonderful product, as its a hydrocarbon it absorbs water from the combustion process and burns it. Steve.

Hello Carl., Try ‘Support’ under ‘Your membership’. Regards, Gareth.

Update.... the dealer is collecting my car tomorrow and fitting a new radiator for me 🙂

Good work investigating the problem Jonny. Stevey Y is probably the best person to advise on injector changing.

Pointless using Audi main dealer on an 8 year old car. First off you’re paying around £180 an hour labour, then overpriced Audi branded parts. Chances are the oil and cabin filter are made by Mann which are OE. Oil is probably Quantum, but I use Castrol Edge. Incidentally you can get charcoal activated cabin filter over basic version. Secondly, when you come to ever sell the car, then full history is just a tick box. I do my own servicing, so when I sold an immaculate VW Polo (daily runner) a few years back to webuyanycar, they class it as part history, although every receipt for servicing was in a folder. A trusted Indy can service it and flag if there are any issues.

Hello Harry, I think equally important is what servicing has been carried out on the car during its 8 years and 14k miles with you. Perhaps you could let us know. I’m in complete agreement with Stevey Y, and my rule of thumb is once the car is out of warranty, it’s maintenance is only carried out at garages where you can actually talk with the mechanics/ proprietors rather than service receptionists. Sorry to point out, but any car which covers the annual mileage that you do <2k/a has had an hard life, with stop/starts, probably not getting fully up to temperature etc. etc. Respect should be paid to this and the car deserves at least an annual oil and filter changed. Not sure if yours is running on a cambelt as opposed to chain, but if so, I would strongly advise this is renewed sooner than later. Regards, Gareth.

Hi absolutely sod all else, for that sort of money at an independent garage you wold get, oil/filter, pollen and air filter, what you are being charged for is some Wassoc to wander around underneath with a torch and a phone camera trying to find the smallest excuse to generate more overpriced work, when you look on this forum there are loads of people who have been told by Audi that this bush is gone that needs changing, the best one ever on another forum was your brake pads need changing because they are 50% worn, when are people going to wake up to the fact that full Audi service history is not worth a cup of cold goats urine, better an honest independent that values your custom. Steve.