Well I bought a 2005 cayenne v6 rare manual, serched for about three months and finally found a beauty, First longer trip out quick pop to ikea Leicester to nottingham nothing major..got home all ok, decide to nip to the super market the non start??? did all the normal checks no problemd hooked up the snap on code reader no faults decided to do a compression test.. no compression on 3 cylinders.. pulled the rocker cover off and the cam timing is totally out, some how has slipped and mullered the engine,, ooooh so happy!!