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Hi all, So this is beginning to bug the crap out of me. Over the last 4 months my rocker cover has developed an oil leak at the rear left hand side (as you look at it from the front, inline engine). It drips directly onto what I think is either the particulate filter, or the catalytic...

I owe you all a beer should we ever meet! Changed the actuator and it now pulls like a train again! No silly stutter! Pulled the old actuator apart and there was a tear in it. Thanks again!

Silly question, are you getting a vacuum feed to it on idle? I've got nothing.

Guys, I think I may have found my problem! Tried doing a vacuum test on it, by sucking on the pipe, lots of air movement but no movements of the actuator. If I blew then there was full resistance. Does anyone know the part number of the actuator?

Wow! Thanks for the replies guys. I'll look into it! Although I have tested the swirl flap actuator on the inlet manifold and it does work, but I suppose it could have split and should be working better!

Hi all, 2006 Audi A4 2.0 TDi 170 S-Line, 75k miles - Full Audi service history, ecu software up-to-date, not applicable for injector or loom recall. An ongoing issue that seems to be getting slowly worse. The car used to stutter or surge, as in shakes the car for a split second if cruising at...

Sorted itself out after cranking solidly for 15 seconds it fired up and ran smoothly again. How odd!

Hi all, I have a 56 plate A4 TDi 170, up until this afternoon it used to start up first key turn and run extremely smoothly for a derv. today I got to the car, it opened with the RCL and on trying to start it the engine just cranks and won't fire up. All the lights go out properly, the engine...

You've got a BMW trademarked system on your audi?

Tuffy - i had 312mm discs on mine before the upgrade. The disc bells had vent holes in them. Running 321mm set up with allow calipers and greenstuff pads, MUCH better stopping power now :D

Wouldn't make much difference IMO. I'd just have the EGR mapped out and blank it off.

Overfuelling is black smoke. I'd go for your inlets are gunked up or valve stem seals.

my god, you didn't get an answer within 18 hours?! Someone should be shot!

30yr old me, 23 yr old missus, Scotland postcode, 9yrs Ncb, all modifications declared, not garaged - £210 :)

I've been assured by the seller they were s4 and shown the car they were removed from - reputable seller on eBay too. I need to 100% confirm with audi to make sure they are the right carriers, but they are pretty big and I don't think I'd want to go bigger due to material stresses.

You'll also find the S4 mounting points on the hub are further out which allows for the 345mm disc. This is the position i'm in, geniune S4 345mm discs, carriers and callipers yet when mounted up will only allow the 321mm disc to be fitted. Nice one audi.

If there's one thing I've learnt about these cars, is every weekend it needs a good long drive. My car is very low mileage and was owned by a lass in Aberdeen who did short journeys, so i make sure the dpf is fully cleared.

Lets start with the basics, shall we? What engine is it?

Don't scotch lock. I you're going to do it, do it properly and solder it! Scotch locks can cause overheating, shorting and fires. I Passionately hate the things.

Quattro is where it's at! Got me up the Cairngorms well over the ski season!