LG79
New Member
Hi all I have a 2013 B180 Sport, which has recently developed a loud noise on engine start which last a few seconds then back to normal. I can only describe the noise as similar to a sewing machine, once noise goes the car drives fine and sits idle with no issue. But as of this morning, it now has a loud clunking coming from the top of the engine that doesn’t stop and gets worse when engine is revved. Any ideas at all, as I’m stumped.