Audi A5 3.0tdi Intake Manifolds.
Discussion
Hey all,
Recently purchased a 2008 A5 3.0tdi, loving the car.
Ive been doing a bit of research and it seems the engines weak spot (seems all cars have something) is the intake manifolds.
Ive done a thread search and cant find anything that releates to the performance impact to this engine is they fail, i have only found costs.
If these manifolds fail does it impact performance at all?
Many thanks.
Recently purchased a 2008 A5 3.0tdi, loving the car.
Ive been doing a bit of research and it seems the engines weak spot (seems all cars have something) is the intake manifolds.
Ive done a thread search and cant find anything that releates to the performance impact to this engine is they fail, i have only found costs.
If these manifolds fail does it impact performance at all?
Many thanks.
They impact throttle response/torque, especially at low rpm.
https://en.wikipedia.org/wiki/Swirl_flap
https://en.wikipedia.org/wiki/Swirl_flap
Generally a very good engine.
But I believe the EGR's getting clogged up, can also be a fairly common problem.
Mine started throwing up a code for the EGR, so put some of this through it.
www.ebay.co.uk/itm/GENUINE-BG244-BG-244-Diesel-Fue...
Which seemed to sort the problem for the short time, up until I sold the car to webuyanycar.
But I believe the EGR's getting clogged up, can also be a fairly common problem.
Mine started throwing up a code for the EGR, so put some of this through it.
www.ebay.co.uk/itm/GENUINE-BG244-BG-244-Diesel-Fue...
Which seemed to sort the problem for the short time, up until I sold the car to webuyanycar.
The worst symptom of manifold failure is that it triggers the EML, which will now be an issue come MOT time.
We have the 3.0TDI in our A6 family hack, bought in 2011 with 50k on the clock and now on 220k, regularly serviced and the oil changed every 10k. The EGR and injectors were replaced around 180k (which wasn't a pleasant bill - the injectors cost north of £200 each!) but in our experience the 3.0 has otherwise been an excellent and thoroughly reliable engine.
It's taken this long for it to happen but the EML has recently come on and a scan shows that the inlet manifolds are now on the 'to do' list. Given that the car is now only 18k short of having driven to the moon I don't reckon I can really moan too much about it!
We have the 3.0TDI in our A6 family hack, bought in 2011 with 50k on the clock and now on 220k, regularly serviced and the oil changed every 10k. The EGR and injectors were replaced around 180k (which wasn't a pleasant bill - the injectors cost north of £200 each!) but in our experience the 3.0 has otherwise been an excellent and thoroughly reliable engine.
It's taken this long for it to happen but the EML has recently come on and a scan shows that the inlet manifolds are now on the 'to do' list. Given that the car is now only 18k short of having driven to the moon I don't reckon I can really moan too much about it!
JonJon2015 said:
The worst symptom of manifold failure is that it triggers the EML, which will now be an issue come MOT time.
We have the 3.0TDI in our A6 family hack, bought in 2011 with 50k on the clock and now on 220k, regularly serviced and the oil changed every 10k. The EGR and injectors were replaced around 180k (which wasn't a pleasant bill - the injectors cost north of £200 each!) but in our experience the 3.0 has otherwise been an excellent and thoroughly reliable engine.
It's taken this long for it to happen but the EML has recently come on and a scan shows that the inlet manifolds are now on the 'to do' list. Given that the car is now only 18k short of having driven to the moon I don't reckon I can really moan too much about it!
You can buy a rebuild kit off ebay for about £100, main issue is getting the fuel rails off the top of the engine.We have the 3.0TDI in our A6 family hack, bought in 2011 with 50k on the clock and now on 220k, regularly serviced and the oil changed every 10k. The EGR and injectors were replaced around 180k (which wasn't a pleasant bill - the injectors cost north of £200 each!) but in our experience the 3.0 has otherwise been an excellent and thoroughly reliable engine.
It's taken this long for it to happen but the EML has recently come on and a scan shows that the inlet manifolds are now on the 'to do' list. Given that the car is now only 18k short of having driven to the moon I don't reckon I can really moan too much about it!
There's loads of videos on Youtube on how to rebuild them.
I had considered going for the cheap Audi linkage repair fix but that's likely just a sticking plaster to put the EML out for a short time rather than a solution to the problem, especially on a high miles engine. I also considered buying a rebuild kit as you suggest, but I ultimately decided to be lazy and to go for the complete refurbished Airshox kit as I don't particularly enjoy working on it and getting my hands dirty for any longer than is absolutely necessary with the diesel 
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