Hi, I have just bought myself my bucket list car a 2007 Audi S8 V10 reg S8AAU. I bought it from South West Vehicle Auctions and generally I am absolutely delighted with it. It has done around 170k miles and given its age and mileage it’s in remarkable condition. There is a reasonablish history and the first thing I have done is to get a full service and have had new NGK plus fitted as I couldn’t see a record of them ever having being changed and there seems to be a hot start issue. Unfortunately the plugs in themselves have not solved this but happy to have them done anyway. The only other issue is the Adaptive Headlights with a warning lamp that flashes constantly while driving 😤. I have ordered a basic OBD reader to see if there are any other issues I need to be aware of before my next steps. 
 

Anyways, I just wanted to introduce myself and will upload some photos of the beast 😆 and report back on my basic OBD reader scan. 

All the best,

Simon. 

Welcome Simon, sounds very nice. Look forward to seeing some photos. 
Regards,

Gareth. 

Welcome to the forum you'll find the members on here are a friendly and helpful bunch 🙂 

I do love the d3. Cracking engine note on the V10. Hope it proves to be a lovely car. 

15 hours ago, Simon - Chessington said:

Hi, I have just bought myself my bucket list car a 2007 Audi S8 V10 reg S8AAU. I bought it from South West Vehicle Auctions and generally I am absolutely delighted with it. It has done around 170k miles and given its age and mileage it’s in remarkable condition. There is a reasonablish history and the first thing I have done is to get a full service and have had new NGK plus fitted as I couldn’t see a record of them ever having being changed and there seems to be a hot start issue. Unfortunately the plugs in themselves have not solved this but happy to have them done anyway. The only other issue is the Adaptive Headlights with a warning lamp that flashes constantly while driving 😤. I have ordered a basic OBD reader to see if there are any other issues I need to be aware of before my next steps. 
 

Anyways, I just wanted to introduce myself and will upload some photos of the beast 😆 and report back on my basic OBD reader scan. 

All the best,

Simon. 

Hi Simon,

S8 V10, very tasty!

Interestingly I have an S7 with the V8 4.0 Twin Turbo unit fitted, but I too have a hot start issue. If the car has been used and brought up to normal operating temperature and then shut-off for anything more than around 5/10 minutes max, it doesn't like starting cleanly. It does always start, but not as it should and I dont feel fires on all 8 cylinders immediately. It doesn't take many seconds, maybe 2 or 3, to settle itself down, but I don't feel its right. I have discussed the issue with my local independent Audi service centre and they initially thought all signals point towards the crankshaft position sensor. This I asked them to replace with a new genuine Audi part, but much to their surprise and my disappointment it didnt fix the problem, but looking on the positive side and embarking on what is now an elimination process (but a costly one) that particular sensor can be forgotten about. The service centre are now feeling that the fuel pumps are possibly making the mixture too rich when the engine is being started hot and whilst the car will start from cold perfectly, even after standing for a week or two, the service centre are thinking that the mixture is too rich when starting from hot. This theory is also supported by the fact that if i open the throttle, not fully, but a good half, when starting from hot, the engine fires up more quickly than no throttle at all which can take 3 or 4 attempts. In both scenarios the engine does not start cleanly, just more quickly with the throttle open. Currently I am at the stage of using the car as is because everything else is great, and when I've done about 500 miles since the service centre cleared any stored codes etc, I've been asked to return the car to see if any new codes have been stored. At the moment the service centre who are Audi specialists and very familiar with their various engines, feel that it could be that the fuel pumps that could be giving trouble on hot starts. Does any of this sound familiar to you and can you relate to any of the issues that I'm experiencing? 

Hi Simon,

Following the message I sent you above re your hot starting issue, I was wondering if my reply had been any help to you?

 

A good question Chris. Any response Simon?

Thanks Chris,

Forum apologies on behalf of Simon. Regrettably, Simon revisited the day after he joined, and after he had been welcomed to the forum, but has not returned since.

We moderators are doing all we can to discourage this non-response to assistance given, but it really is a thankless task I’m afraid. 
Positive thinking - it might improve one day! 
Many thanks again Chris.

Regards,

Gareth. 

Hi Cliff & Gareth,

Many thanks for your messages.

I fully appreciate how difficult it must be to try and discourage the non-response from members who have been given, what's supposed to be, helpful assistance!

Anyway, as you say lets hope it will improve one day

Regards to both

Chris.

I guess he's another post and run merchant we shall not hear from again.

Unfortunately, I think your probably right.