Seafoamed the car

Car had the usual "chatter" r53s are known for upon start except this time it doesn't go away after driving a few feet.

Car rattles every time the car is at idle and up to 2000 rpm then goes away any higher than that and car drives very fine

I have not experienced any performance issues to make me think something is wrong with the engine

Just did a full oil change and oil filter so I doubt it's the oil being low


thinking about just doing another seafoam treatment because its the 2nd or 3rd ive ever done it and i bought it because i was impressed with the initial results. I'm now @ just over 100k; hoping something like carbon is just blocking something and i need to give her a good blow once again

anyone have any ideas? is it the chain or belt tensioner??? I suppose I should start with a new oil change since thats the cheapest place to start at this fix. This car is giving me so many damn headaches man

 

i just did the seafoam treatment and now after connecting the pcv back it wont stay on. if i have the pcv disconnected its fine. im guessing theres something in line... im thinking another go for the seafoam treatment to take whatevers there out.