RS246.com Forum :: The World's #1 Audi R, S and RS Enthusiast Community

A guide? I have the Bentley instructions for manifold removal in PDF format with a tool list and notes and tips on each page after doing it several times myself. I've shared it with many people in the States, and since its still a Bentley document, I've asked all involved not to post it online. I al...

Sorry everyone...haven't visited for a while. I have no idea how the original post got messed up, but I updated it so the step-by-step should be viewable and current. No need to visit the link a few posts up, which was basically the same info on a different site.

+2
Quattro, wide tires and 4000+ pounds.

The RS4 has the same basic motor from the R8 and other various parts from a Gallardo. So its got some super car bits, but its far from super-car fast. But I didn't spend $70k (USD) to beat up on E36 M3's, STi's and Evos in drag races, or around the twisties for that matter. I spent the money to have...

Three common causes. 1) the vacuum line that you successfully located can get pinched during vehicle assembly, rendering the solenoid unable to function. The solenoid receives its signal from the ECU, but with no motive force to move the diaphragm (from vacuum), the flap doesn't move. Since there is...

Correct, less load. That means low effective cylinder pressure. Normally, low-load-high-rpm scenarios just increase blow-by past the rings...the rings need a certain amount of cylinder pressure to seal properly. If the pressure is low enough, the rings will actually flutter up and down axially in th...

Yes the round one. Will it open at 5000 rpm while the car is stationary? Don't know. Let us know how that works out. I don't recommend it. But even if you do, I won't call Audi UK to tell them someone is free-revving the crap out of their RS4. I don't know how much VCDS costs over there, but it is w...

Neither ECU knows if the flap is stuck or doesn't open/close properly. That is part of the problem. Given the sensitivity of the RS4 to inlet air temperature, a faulty flap can cause serious issues and no MIL's will ever occur. There is no sensor on the air box flap mechanism. The manifold tumble fl...

could it be possible that there was some sort of blowby - ie sticking ring.... this would pressurise the sump and start to blow vapour and oil out at a greater rate then normal through the breather and back into the inlet Its hard to imagine the rings were sealing completely. What if the rings had ...

Ok, I changed my mind. The carbon must contribute to some of the scratching that can be seen. Although, it looks like that is not all that's going on. This seems to be the consensus, right? I can only think with pictures, so I made up a few. Mal, getting to the possible origination of fuel washing t...

The secondary air injection flow (during the catalyst heating phase on start up) is controlled by a solenoid and requires vacuum. The solenoid is under the manifold, in the engine "V" and uses the same vacuum source as the manifold flaps, power flap and exhaust flaps. I'd say you have a vacuum leak....

The competence of the private shop mechanic (or Audi tech) would only have to be slightly above dim to avoid any problems at all with the valve clean procedure. Not to mention, the standard procedure (soaking and scrubbing the valves) is what is typically used by Audi. The walnut shell blasting meth...

Dave M - you didn't hear anything at all when you ran the power flap test (Intake Air Switch over valve 'Output test')? I can't imagine it would be difficult to hear even with the snorkel on. You are probably right about the flap not operating. The vacuum line going to it may be pinched completely,...

Vagcom (VCDS) set-up? You'll need the HEX-USB+CAN for an RS4 ($349 USD) as well as a laptop running Windows XP, Vista or 7.

I'll have to get the 090 update mine hasn't been at the dealer for >1.5 years so I'll have the old stuff correct? would it be 070 or 080? I'm not sure if the UK software versions are the same as the US's. I have a very late '08 model and my version is 030 and the latest I've seen on a US car was 05...