Hi all ive recently been doing an engine rebuild on my vectra sri 2.2, ive just about completed it and ive just fitted the cam chain,following one of the pdf guides from this site along with help of mr haynes. ive timed the cam chain up pretty much spot on all was nice and tight and all markings were set right. only thing is ive come to rotate the engine a few times to check alls ok and ive rotated it roughly about 4-5 timesand on neither one time did all the markings be correct and in the same possiton as when i timed it up nothing has slipped or anything so cant think why this would be is this normal? notsure.gif