Hello. Wondering if anyone has an idea. When started from cold, it sounds like one of my tappets/lifters is draining of oil, so it rattles a lot for a few minutes. Once it's warmed up the noise goes completely. It's a 2.0 twin spark. It's not a variator noise, which I sometimes/rarely get for second when I start it from hot, but is definitely a rattle. Is getting worse too. Sounds like it's coming from the top end nearer the front, but it's hard to tell. Is this common? Is it easy to change the lifters? Can i remove the camshafts and lift them out with a magnet? (I did the ones on my smart car like that). Its done only 65k miles.Will an oil flush help it? Can't imagine it's the variator as all of it would be rattling rather than just one valve.... �� Makes the noise at idle and when revving it.