Had an unusual knocking noise while cold recently, went away when warmed up.
I had convinced myself it was just a flapping fan belt but while browsing another forum, someone posted a vid with exactly the same noise......investigation suggested loose head. I checked accessible studs, and...........yep, loose. so thats why I have this.......
While its out, I'm taking the chance to spruce things up and get the tins powdercoated....Every cloud etc....