Hey, thanks for the info. I will check for vaccum leaks.
I know it's popping codes, but I'm not sure which ones because I don't have a code scanner myself.
I dont know if a cylinder itself is leaking oil. I have an oil leak and the head gasket is where it's coming from.

Hello, I have a 2006 S60R and it starting loping while idling and driving. I will check the fuel pressure when I get my hands on a gauge and clean the throttle bottle and IAC when I get a chance. I have just under 149xxx miles and am about to replace the head gasket seal and spark plugs. I'm just cu...