Audi S5 4.2 Carbon build up issue?
Discussion
Hi, had pretty much decided my new car was going to be S5 4.2. However googling issues shows up a major concern over carbon build up of FSI engines in general, but the 4.2 in particular. Mainly on US forms, so wondering if using high octane fuel in UK means less of an issue? Any owners out there care to share their thoughts?
Cheers
Cheers
had my B7 RS4 done after 5 years of ownership - cost £450 (anyone who takes it to Audi for doing is a mug or is not paying)
I see it as a regular maintenance item that needs to be done every 3-4 years, as rest of car has been so cheap to run (fuel aside) i can live with it
I see it as a regular maintenance item that needs to be done every 3-4 years, as rest of car has been so cheap to run (fuel aside) i can live with it
Edited by Adam B on Tuesday 22 July 10:22
Adam B said:
had my B7 RS4 done after 5 years of wonership - cost £450 (anyone who takes it to Audi for doing is a mug or is not paying)
I see it as a regular maintenance item that needs to be done every 3-4 years, as rest of car has been so cheap to run (fuel aside) i can live with it
Hi Adam, I see it as a regular maintenance item that needs to be done every 3-4 years, as rest of car has been so cheap to run (fuel aside) i can live with it
Are there any tell tell signs that it needs doing? Aside from loss of power?
Lots of blow by gases and oil vapour end up coating the intake valves and ports. Common to many performance German engines.
http://www.mrctuning.com/index.php?option=com_cont...
The fix would be to re-route PCV gases into a decent oil seperator and ditch all the SAI and EGR nonsense. Just need to make sure you leave their respective relays in place otherwise the ECU will complain and not give you any long term adaptations.
http://www.mrctuning.com/index.php?option=com_cont...
The fix would be to re-route PCV gases into a decent oil seperator and ditch all the SAI and EGR nonsense. Just need to make sure you leave their respective relays in place otherwise the ECU will complain and not give you any long term adaptations.
Mr Roper said:
Hi Adam,
Are there any tell tell signs that it needs doing? Aside from loss of power?
Not really in my case, and the loss of power is so gradual I am not sure that is conclusive. I live in London so knew after 4/5 years with a fair bit of urban driving mine would benefit from it, got before and after pics from the garage I used and the difference is clear, but I would be lying if I said it made a huge difference to real world performance.Are there any tell tell signs that it needs doing? Aside from loss of power?
Adam B said:
had my B7 RS4 done after 5 years of wonership - cost £450 (anyone who takes it to Audi for doing is a mug or is not paying)
I see it as a regular maintenance item that needs to be done every 3-4 years, as rest of car has been so cheap to run (fuel aside) i can live with it
Adam - you say you paid £450 in the london area to have your carbon cleaned.I see it as a regular maintenance item that needs to be done every 3-4 years, as rest of car has been so cheap to run (fuel aside) i can live with it
Audi price is currently north of 2.5k for the job. I am in the London area. Could you reccomend the garage where you got yours done? Could you pm if your not happy posting on the forum.
cheers
seadragon said:
I am not an expert but would a Terraclean not help? (google it)
I am getting mine down tomorrow and my partners car on Thursday. About £110 incl vat
Dont think so, Terraclean is really only for the fuel/injection system whereas the carbon build up is more of an inlet/intake issueI am getting mine down tomorrow and my partners car on Thursday. About £110 incl vat
Adrian E said:
apparently they have a process that will work on an FSI, but someone commented recently that the dealers offering Terraclean didn't have the kit
The crushed nut blasting method seems pretty effective
That was me I think. My local garage has a Terraclean system and told me about the special attachment for direct injection engines/valve washing but commented they didn't have it, (unfortunately) had no intention of getting it and didn't know anyone who did. I've called a few other places in the Glos/Ox/Wits/Bristol area to see if they offer it but not luck so far. YMMV and I'd be keen to hear from anyone who did find one.The crushed nut blasting method seems pretty effective
I may give the standard £110 Terraclean a try at some point but then again the European EA113 TFSI engines don't seem to suffer from the coking issue as badly as the US ones.
ManOpener said:
I may give the standard £110 Terraclean a try at some point but then again the European EA113 TFSI engines don't seem to suffer from the coking issue as badly as the US ones.
Coking up is still an issue on pretty much all direct injection cars, I've seen a fair few in recent months, I have both the std petrol terraclean machine, s-tool adapter and pressurized induction tool and can safely say that even using the s-tool adapter alongside the std terraclean service helps dramatically improve the situation with carbon build up on inlet valves and inlet manifolds, my personal opinion would be to wait until you can get the full service I'm sure it wont be long till they change their minds its still relatively new equipment so may take a little time for all agents to get on board!! As good as the std terraclean service is, it wont make a dramatic impact on inlet valves and manifold build up without the physical wash from the s-tool or induction tool on direct injection engines.There is a new to the market engine carbon clean system based on hydrogen technology.
In a 30 mins service it will dramatically reduce the carbon build up from the air intake right through the system and out the exhaust.
It allows the engine to breath again and the results are pretty impressive.
Improved performance, engine idle, emissions and power increase resulting in increased fuel efficiency.
No chemicals used and very simple process.
In a 30 mins service it will dramatically reduce the carbon build up from the air intake right through the system and out the exhaust.
It allows the engine to breath again and the results are pretty impressive.
Improved performance, engine idle, emissions and power increase resulting in increased fuel efficiency.
No chemicals used and very simple process.
S6 AJC said:
ManOpener said:
I may give the standard £110 Terraclean a try at some point but then again the European EA113 TFSI engines don't seem to suffer from the coking issue as badly as the US ones.
Coking up is still an issue on pretty much all direct injection cars, I've seen a fair few in recent months, I have both the std petrol terraclean machine, s-tool adapter and pressurized induction tool and can safely say that even using the s-tool adapter alongside the std terraclean service helps dramatically improve the situation with carbon build up on inlet valves and inlet manifolds, my personal opinion would be to wait until you can get the full service I'm sure it wont be long till they change their minds its still relatively new equipment so may take a little time for all agents to get on board!! As good as the std terraclean service is, it wont make a dramatic impact on inlet valves and manifold build up without the physical wash from the s-tool or induction tool on direct injection engines.Gassing Station | Audi, Seat, Skoda & VW | Top of Page | What's New | My Stuff