That would be a correct assumption. Although I hear Ford might have something in the works to avoid it.

 

For some reason I've only heard about it being a problem on audi's, specifically the rs4.. hm

 

Yeah, espeically b/c I just bought a new 12 S5!!! Kind of a "sucks don't it!!" Although IF it's any direct injection setup doesn't sound encouraging either.....

 

Have you been able to confirm this happening on the new 2.0 TFSI motors? I'm at 30k on my 2009 A4

 

We have done cleanings on the 2.0's as well.

 

Hey Kai, I had asked this in another of your threads, not sure if you saw it but I am really curious if you have a moment to answer:

 

((raises hand)))

Stupid question: I thought due to the higher pressures in the DFI engines- that the fuel was atomized into smaller bits; thus resulting in a hotter and more even burn? If the DFI engines are supposed to be MORE efficient....

how is this happening?

 

That's what I don't understand. In the 9 years I've been seriously messing with DI engines (diesels, so compression vs. spark ignition), I've never seen anything like this without exhaust gas recirculation. I am thinking they are employing some type of EGR. In a DFI engine fuel is injected into the combustion chamber where the air enters, via the intake valves, so the the fuel is technically never on the intake side of the head. If you employ an air filter, the air should be clean.

I am not at all familiar with Audi FSI nor do I claim to be, but the only two things I can think of are EGR, or somehow carbon is getting past the intake valves so I don't know if the timing of the spark event is playing a role or what. Doesn't make sense though.

Also wondering why I've asked this question two of three times with no response. Guess I will call one of the Audi techs this week and ask them.

 

I've not seen this problem outside of Audi......

 

That's also quite pathetic to have to perform every 25k miles.