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On this clip the fuel comes through and it starts quickly, sometimes it is more spluttering before firing up!?

I have a film clip of it not starting and will try and upload it.

I have just changed the cam/trimming belts and no change. I think I will take it to Diesco, in Ipswich who are Diesel engine/injector specialists and see if they can diagnose the fault. When I had the cam belt done at a local VAG garage they put it on the box and no fault codes! They reckon...

Ok cheers. I took it to a local Vag garage and told them the vault and asked there opinion they said they have had similar faults and said it was wear on the injector valve seals? I think I will get cam done as that's needed. And get him to do those checks as well. Thanks

The cam is due to be changed in August. It's done 70,000 from new and had one cam change so this is its second on time not miles. I will get that done first then before valve seals and see if that fixes it. One I check your suggestions. If not then I will change the valve seals.

Tony, Cheers the filter and tvalve was replaced by a mate, who is an Audi mechanic so I hope he has done it right. If not what am I looking for? Also reference the fuel filter, I take it that I should pull hose off engine side? Then if this is not full, what do you think the fault is? I have...

Ok I have replaced the fuel pump tank. But now I'm getting a different start fault. Now occasionally after about 15 seconds of turning it splutters into life and starts. Then no issues through the rest of the day, or for a few more days. Could this be injector valve seals?

Adams24 - right changed both of those with genuine parts and it started after a recent failure, sitting on drive. I'm going to use on a daily basis now with a can of Easy Start just incase! Fingers crossed all will be well. The rear pump seems to be pushing enough fuel all the way to the head so...

No fuel level doesn't change it. It seems to start pointing downhill and flat. I have now also changed fuel filter. But I think it must be pump or air getting in some how? How much should a fuel pump set me back?

No codes! Which is why it's strange. Yesterday at midday I we tout to take dog for a walk and wouldn't start! Later I got it going with some easy start and drive to work. After 10 hours at work went out and started no problems? It is very intermittent. My drive is on a slope as is the car park...

Hi, I have this periodic starting problem with my A6. The fuel pump primes, the car turns over, volts are good but doesn't fire up and start. I replaced the t-bar joint for the fuel lines as that sometimes cracks and pulls air in. It was fine but 5 days later same fault? Any ideas?

Sorry to ask some questions which maybe obvious but I have a couple which I am sure will be answered. i have just bought an A6 1.9 TDI Avant SE spec in black, low mileage with 64k on clock full Audi dealer history. So I want to keep it in good order but also make some subtle tweaks. I need...