BMW 316ti rattle noise from 3rd quarter of engine farthest from bumper. Starts fine drives fine no apparent loss of power. Noise starts about 2mins after starting & more evident at 1500-2000 revs. BMW dealer said tensioner possible chain stretched. Replaced timing chain, tensioner & guides & reset timing - no change! Diagnosis on computer fault codes misfire cylinder 4 & all cylinders no other fault codes. Why is it making this noise? Had a look at eccentric cam shaft & slight wear to centre 2lobes more like smudge on metal than anything. Wear at vvt servo motor worm gear - slight line. Centre 3/4 at where worm gear connects with eccentric cam shaft still has flat to head of teeth but slightly narrower than rest of teeth. Any ideas? Thanks
have the same problem?
Wednesday, February 20th, 2013 AT 9:56 AM