I own a Freelander 1.8i 2002 and 120000 km.A rather unsuccessful engine as they've changed the head gasket and sealed cylinder liners a couple of times.Earlier after starting the engine especially when the car hadn't been used for some time , I could hear some clicking sound coming presumably from the engine lifters but that sound seemed to disappear after some time.Now that sound has become permanent and louderWhat could be the problem?Aren't these automatically adjustable lifters?I use Castrol Ultraclean oil and as advised I've put also Bardahl Lifter Cleaner