Yeh when you turn the key it knocks for about a second then goes!! garage said bearing straight away but tbh you could tell by the noise! it dosnt knock on tickover but if you rev it sometimes it comesback and sometimes not,hope i have cought it early. Can anyone tell me if the crank will be visably worn or if it needs mesuring? is it a simple take out put new ones in job? i have done some engine work before but not bearings, anything to look out for? e.c.t? torque measurements? a write up on doing it? Help really really apreciated its my daily driver so need it doing asap! cheers