Help, I don't know if anyone here can help with this, I know it's a car but but it's an engine, 04 polo 1.4 running fine one day and seized up next the next morning. I parked up with no issues next day it turns over a couple of times then stops, then click click, ok, charge battery and click click. Cam belt covers off and I found a broken guide pulley so wondering if it's jumped a couple of teeth and jammed on a valve, cam carrier off, all valves appear to all be up so crank should turn....no. I've been wielding spammers for a fair few years now and have never had an engine do this, it's acting like I've been thrashing it with no oil in and seized solid but it had been left out over night and was stone cold, oil at correct level. I'm stumped so I was hoping someone here might be able to shed some light on this.