Hey All,
Brand new to the forum, I have run a B6 S4 for about 5 years but with a growing family I decided to move up in size to the lovely C6 S6 - what a sweet machine! I purchased it privately but paid for a full mechanical inspection to be carried out prior to me considering committing to the purchase. My main concern was engine and trans condition both came back with stella reports!
I flew up, tested the car, was super happy parted way with $$ then drove her home, 5 hours into ownership I noticed a slight rattle, this is only heard at cruise speed and only when the engine is NOT at idle. The stays throughout the rev range starting from about 1200-1400rpm up - the main reason I think its inlet flappers is that this rattle does not occur until the actuators at the front of the inlet manfold open/move …shes is quiet until that exact moment…if you stick a tool on the actuator arm you can actually feel the rattle at the same resonance when it comes on too…
The cam chains have been done apparently but the previous owner did not have paper work as he himself did not do them. The car has had a carbon clean, the previous owner stated that its normal for these post a clean… the mechanic did not hear the issue during the inspection and also believes its the flappers. his opinion was that its not a big deal and you can drive it fine…
My issue is from whats been posted driving with the “rattle” is not ideal, I cant talk about a performance drop as I havent had it long enough to notice, no eng lights have popped up…Also from what I have found the only solution is a new inlet manifold…not something I wanted to have to buy on day 2 of ownership!
Lastly im down in the wonderful land of New Zealand so parts prices and shipping is killer - Am I on the correct track? if so any recommendations for places to find the part at the best price? NZD is way lower than USD so thats going to blow that out too dammit! Im rather happy I pushed the price as low as possible